Find the area of a circle with a circumference of 6.28 units.

Answers

Answer 1

Answer:

3.14

Step-by-step explanation:

Answer 2

The required area of the circle is given as 3.14 square units, as of the circumference of 6.28 units.

What is an area circle?

The area of a circle is given by the pie times square of the radius.

Area of circle = πr²

Here,
circumference of a circle is 6.28 units.

circumference = 6.28
2 × π × r = 6.28
r  = 1

Now,

Area of the circle = πr²
Area of the circle = 3.14 × 1²

Area of the circle = 1 square unit

The required area of the circle is given as 3.14 square units, as of the circumference of 6.28 units.

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Related Questions

Katie has a cube with an edge length of
3 inches. Malea has a cube whose volume is 8
times greater than the volume of Katie's cube.
What is the length of Malea's cube?

Answers

Answer:

3 x 8 = ____16____

Step-by-step explanation:

8+8+8= 16 or 3+3+3+3+3+3+3+3= 16

Hope this helps :)

Answer:

3 x 8 = ____16____

Step-by-step explanation:

8+8+8= 16 or 3+3+3+3+3+3+3+3= 16

Step-by-step explanation:

A submarine travels 19 miles in 1/2 hour. Write an equation to find out how long it would take the submarine to travel 57 miles at the same rate. Then find the time.

Answers

Answer:

1.5 hours

Step-by-step explanation:

We can write a ratio to solve

19 miles         57 miles

-------------- = --------------

.5 hours          x hours

Using cross products

19x = 57*.5

19x =28.5

Divide each side by 19

19x/19 = 28.5/19

x =1.5

1.5 hours

I put the wrong answer don’t mind me

what is the volume of this hemisphere? Exact answer in terms of π the radius is 48 m options 1) 9,216 π cubic meters 2) 18,432 π cubic meters 3) 28,938 π cubic meters 4) 57,876 π cubic meters

Answers

Answer:

Volume, [tex]V=73728\pi \ m^3[/tex]

Step-by-step explanation:

The formula for the volume of hemisphere is given by :

[tex]V=\dfrac{2}{3}\pi r^3[/tex]

r is radius of hemisphere, r = 48 m

[tex]V=\dfrac{2}{3}\pi\times (48)^3\\\\V=73728\pi \ m^3[/tex]

So, the volume of hemisphere is [tex]73728\pi \ m^3[/tex].

Which is the same as diving a number by 10?

Answers

Answer:

Step-by-step explanation:

well i guess if the decimal is on the left you would move it to the right twice

because if you only moved it once it'd become 1.0

and if you moved it to the left once it would also become 1.0

and if you moved it twice to the left you would be left with .10

pls mark me brainliest

work out
3/17 x 17/21
write the answer in its lowest form

Answers

3 × 17 over 17 × 21 with the first as numerator and second one as denominator

We can see that both the 17 can nullify so we are left with ³/21 and simplify to get ¹/7

The expression, simplified to its lowest form is [tex]\frac{1}{7}[/tex]

From the question,

We are to evaluate  3/17 x 17/21

First, we will write the expression properly

The expression can be written as

[tex]\frac{3}{17} \times \frac{17}{21}[/tex]

The expression can be evaluated as shown below

[tex]\frac{3}{17} \times \frac{17}{21}[/tex] becomes

[tex]\frac{3 \times 17}{17 \times 21}[/tex]

Simplifying, we get

[tex]\frac{3}{21}[/tex]

Further simplification gives

[tex]\frac{1}{7}[/tex]

Hence, the expression, simplified to its lowest form is [tex]\frac{1}{7}[/tex]

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help please, give me the best possible answer you guys got
:)

Answers

Answer:

(i) (4, 0)

(ii) -2

Step-by-step explanation:

y = 4 + 3x - x^2

(i)

At point A, y = 0

4 + 3x - x^2 = 0

x^2 - 3x - 4 = 0

(x - 4)(x + 1) = 0

x - 4 = 0 or x + 1 = 0

x = 4 or x = -1

The x-coordinate of point A is positive, so it is 4.

The coordinates of point A are (4, 0).

(ii)

y = mx + 8

We know point (4, 0) is on the line, so we substitute 4 for x and 0 for y and solve for m in the slope equation.

0 = m(4) + 8

4m = -8

m = -2



If P(A) = 0.25, P(B) = 0.60 and P(A and B) = 0.15, are the event A and B independent? Explain/show work.

Answers

Answer:

yes, event A and B independent

Step-by-step explanation:

given data

P(A) = 0.25

P(B) = 0.60

P(A and B) = 0.15

solution

we know here P(A and B) = 0.15

so we know here for independent

P(A and B) is =  P(A) × P(B)     .......................1

so we take here R.H.S here in equation 1 and put here value

P(A) × P(B)

P(A) × P(B) = 0.25 × 0.60

P(A) × P(B) = 0.15

so it is equal to L.H.S = R.H.S

so, we can say that A and B are independent

Solve for x, 17x > -17

Answers

Answer:

x = -1

Step-by-step explanation:

17x > -17, Divide both sides by 17

17x / 17 > -17 / 17

x > -1

Sophie has to choose seven different positive (non zero) whole numbers whose mean is 7.

What is the largest possible number that she could choose as one of the seven numbers?

The largest possible number that she could choose as one of the seven numbers is _ _ because

Answers

Answer:

The largest possible number is 28.

Step-by-step explanation:

Sophie has to choose seven different numbers whose mean is 7, this means that the sum of the numbers is 49. (since the mean is the sum of them all divided by 7 and if we want the mean to be 7, then the sum would need to be 49).

We are asked what is the largest possible number she could choose, so therefore, the other six numbers should be non-zero and the smallest ones so she would have to choose the numbers from 1 to 6 first.

Let's see how much they sum up: [tex]1+2+3+4+5+6=21[/tex]

So now, she needs one more number to sum up to 21 and that will give her 49 in total, this number is 28 (since 28 + 21 =49).

Thus, 28 is the largest number she could choose because if she chose any other greater number the mean would be bigger than 49.

√175 Simplify.Remove all perfect squares from inside the square root.

Answers

Answer:

13.22875655532295...

Step-by-step explanation:

not a perfect square so... yea

brainliest pls

Answer:

[tex]5\sqrt{7}[/tex]

Step-by-step explanation:

[tex]\sqrt{175}=\sqrt{7\cdot 25}=\sqrt{7}\cdot \sqrt{25}=\sqrt{7} \cdot 5=5\sqrt{7}[/tex]. Hope this helps!

please help! i do not understand !

Answers

Answer:

C

Step-by-step explanation:

Know that two angles added equals 180

the answer would be
C) 3x+20+2x=180

CAN SOMEONE PLEASE HELP ME

Find the sine of angle R. Reduce the answer to the lowest terms.
Find the cosine of angle R. Reduce the answer to the lowest terms.
Find the tangent of angle R. Reduce the answer to the lowest terms.
Find the sine of angle S. Reduce the answer to the lowest terms.
Find the cosine of angle S. Reduce the answer to the lowest terms.
Find the tangent of angle S. Reduce the answer to the lowest terms.

Answers

Answer:

Since sine is equal to opposite over hypotenuse, you would create the fraction 8/10. 8 and 10 are both divisible by 2, so that fraction would reduce to 4/5, which is the answer.

Step-by-step explanation:

hey can yall make me brainlyiest

Answer:

4/5 sine

Step-by-step explanation:

John weighs 1.5 times as much as Ellen. If John weighs 144 pounds how much does Ellen weigh?

Answers

Answer:

Ellen weighs 96 lbs

Step-by-step explanation:

Look at the attachment

Answer:

It could be wrong but i got 96lbs

Step-by-step explanation:

144 divided by 1.5

if suresh made a deposit of AED 2700 on the first day of the tear and same amount again after every 4 months at the end of the year how much money will he get if the interest is compounded quarterly and the rate of interest is 7.5% per annum

Answers

Answer:

48.048

Step-by-step explanation:

multiply 77 time 0.60 since 60%in decimal form is 0.60. you then get the answer of that(46.2) and mutiply 0.04 since that the decimal form for 4%. you get 1.848 and add it to 46.2 and get the final answer 48.048. Hope this helped you

The algebraic expression below is a polynomial.
(x-1^k)
where k is a real number.
Please select the best answer from the choices provided
T
F

Answers

Answer:

T

Step-by-step explanation:

Just did it

A cylinder has a base diameter of 14m and a height of 10m. What is its volume in cubic m, to the nearest tenths place?

Answers

Answer:

  1539.4 m³

Step-by-step explanation:

The volume of a cylinder is given by the formula ...

  V = πr²h . . . . . where r is half the diameter and h is the height

__

Filling in the given values, we find the volume to be ...

  V = π(7 m)²(10 m) = 490π m² ≈ 1539.4 m³

The volume is about 1539.4 m³.

6th GRADE MATH:
The length of a park is 250 meters. What’s the park in kilometers?

Answers

Answer:

.25 kilometers

Step-by-step explanation:

Divide the length value by 1000 when going from meters to kilometers

What is the value of z?
A.95
B.126
C.77
D.154

Answers

Answer:

B. 126

Step-by-step explanation:

85*2=170

170+64+x=360

234+x=360

x=126

Can someone please help me with this?

Answers

Answer:

Step-by-step explanation:

find the proportion and solve for the volume.

The volume of a cylinder is 40 Feet cubed. Which expression represents the volume of a cone with the same base and height as the cylinder?

Answers

Answer:

40/3 feet³

Step-by-step explanation:

Volume of cylinder = 3 × volume of cone with same base and height

40 = 3 × Volume of cone

Volume of cone = 40/3 feet³

Answer:

I think da answer is C on edge

Step-by-step explanation:

15 POINTS! will be selecting Brainliest!

How do I do this? Please give step-by-step answers + "work"- will be selecting Brainliest!

Answers

Just divide the bottom numbers then when you figure that out you multiply the top number by the number you divided at the bottom

PLZ HELP MATH!
ASAP MANY POINTS REWARDED!

Answers

Answer:

Isosceles

Step-by-step explanation:

Two sides are equal to each other and not the same length as the other side, so it'd be an isosceles triangle.

Select ALL the correct answers.
Consider the following quadratic equation.
y=x²-8x+4
Which of the following statements about the equation are true?

When y = 0, the solutions of the equation are x=8±2√2.
The extreme value of the graph is at (8,-4).
When y = 0, the solutions of the equation are x=4±2√3.
The extreme value of the graph is at (4,-12).
The graph of the equation has a minimum.
The graph of the equation has a maximum.

Answers

Answer:

Statements 3, 4 and 5 are true.

Step-by-step explanation:

x^2 - 8x + 4

Using the quadratic formula:

x = [ -(-8) +/- √((-8)^2 - 4*1*4)] / 2

= (8 +/- √(64 - 16)) / 2

= 4 +/- √48 / 2

= 4 +/- 4√3/2

= 4 +/- 2√3.

So the third statement is true.

Converting to vertex form:

x^2 - 8x + 4

= (x - 4)^2 - 16 + 4

= (x - 4)^2 -12

So the extreme value is at (4, -12)

So the fourth statement is true.

The coefficient of the term in x^2 is 1 (positive) so the graph has a minimum.

1. What Asian country's flag has the MOST colors? *
India
Thailand
Japan
China
2 Which Asian cu

Answers

I think it could be china but I’m not sure cause there all mostly the same amount

Answer:

Thailand answered the question already

The components of a position vector of a particle moving in the plane are [tex](t^3, 2sin(t))[/tex]
What is the distance traveled by the particle from t = 1 to t = π?

Answers

Answer:

30.113

Step-by-step explanation:

r(t) = (t³, 2 sin t)

The distance traveled is the length of the path (arc length):

L = ∫ₐᵇ √((dx/dt)² + (dy/dt)²) dt

L = ∫₁ᵖⁱ √((3t²)² + (2 cos t)²) dt

L = ∫₁ᵖⁱ √(9t⁴ + 4 cos²t) dt

Using a calculator:

L ≈ 30.113

Notice that distance is not the same as displacement.  If we wanted to find the displacement:

r(π) = (π³, 0)

r(1) = (1, 2 sin 1)

Δr = √((π³ − 1)² + (0 − 2 sin 1)²)

Δr ≈ 30.053

Is the percent increase for 50 to 70 = to the percent decrease from 70 to 50

Answers

Answer:

no it is not equal.

Step-by-step explanation:

when you calculate the percentages, you will find  that the increase has 40% while the decrease has about 28.6%

Answer:

No. The amounts of change are the same, but the original amounts are different. The ratio for the percent increase from 50 to 70 is 20/50, or 40%. The ratio for the percent decrease from 70 to 50 is 20/70, or about 29%.

Step-by-step explanation:

SAMPLE RESOND

A small bag of pretzels costs $0.99 and contains 4 ounces. A large bag of pretzels costs $2.99 and contains 15 ounces. Which is the better buy?

Answers

Answer:

$2.99 is the better buy

Step-by-step explanation:

First, find the unit price for each bag of pretzels. This can be found by the formula: (cost/amount). in this case it is (cost/ ounce)

This means:

0.99 bag for 4 ounces means about 25 cents per oz

2.99 bag for 15 oz means about 20 cents per oz

The lower the unit price, the better the buy.

Each ounce is cheaper with the 2.99 bag, therefore it is the better choice.

Find the surface area of a right cone that has a diameter of 11.2 feet and a height of 9.2 feet. Round your answer to the nearest hundredth.

Answers

Answer:

S=288ft^2

Step-by-step explanation:

d=11.2ft, h=9.2ft

r=d/2=11.2/2=5.6

e=√r^2+h^2=√5.6^2+9.2^2

e=10.77ft

s=πr^2+πre

s=π(5.6)^2+π(5.6) (10.77)

s=91.67π

s≈288ft^2

If the slant height of the cone is 10.77 feet and the radius of the base circle is 5.6 feet. Then the surface area of the cone is 189.48 square feet.

What is Geometry?

It deals with the size of geometry, region, and density of the different forms both 2D and 3D.

The height of the cone is 9.2 feet and the diameter is 11.2 feet. Then the radius will be

r = d/2

r = 11.2/2

r = 5.6

Then the slant height of the cone will be

[tex]l = \sqrt{5.6^2 + 9.2}\\\\l = 10.77 \ \rm ft[/tex]

Then the surface area of the cone will be

[tex]\rm Surface \ area = \pi rl\\\\Surface \ area = \pi \times 5.6 \times 10.77\\\\Surface \ area = 189.48 \ ft^2[/tex]

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A triangular pyramid has an equilateral triangle for the base with a base of 3m and a height of 2m. The height of the pyramid is 18 meters. The slant height is 3.5 m. What is the lateral area of the pyramid?
A.15.75 meters
B.162 meters
C.81 meters
D.31.5 meters

Answers

It’s as you can seeB .162.

Answer:

B

Step-by-step explanation:

I did the problem beforeeeeeeeeeeeeeeeeeeeeeeeeeee

a rectangle has a width that is 7 centimeters less than its length, and it’s area is 330 square centimeters. what are the dimensions of the rectangle?

Answers

Answer:

The dimensions of the rectangle are 22cm of length and 15cm of width

Step-by-step explanation:

To solve this we first have to know the formula to calculate the area of ​​a rectangle

a = area = 330 cm²

L = length  =

w = width = L - 7cm

a = l * w

we replace with the known values

330 cm² = L * (l - 7cm)

330 cm² = L² - 7Lcm

0 = L² - 7Lcm - 330 cm²

when we have an equation like this we can use bhaskara

a = 1

b = -7Lcm

c = -330cm²

ax² + bx + c = 0

x = -b(±)√(b² - 4ac)/2a

we replace with the known values

L = -(-7cm)(±)√(7² - 4(1)(-330cm²)) / 2(1)

L = 7cm(±)√(49 + 1320cm²)) / 2

L = 7cm(±)√(1369cm²)) / 2

L1 = (7cm + 37cm) / 2

L1 = 44cm / 2 = 22cm

L2 = (7cm - 37cm) / 2

L2 = -30cm / 2 = -15cm

The positive represents the unknown with which we work (L) and the negative with which we do not work (W)

The dimensions of the rectangle are 22cm of length and 15cm of width

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