3 years ago

If the circumference is 72 pi inches, what's the radius?

1 answer:

3 0

The circumference is pi times the diameter of the circle. The radius is half of the diameter. In this case, the radius is then 36.

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ipn [44]

$\text{Hello there! :)}$

Answer:

$\boxed{\text{Center at } (7, -4), \text{ Radius of } 7.}$

$\text{Formula for a circle: } (x - h)^{2} + (y - k)^{2} = r^{2} \text{ Where:}$

$h = \text{ x-coordinate of center}\\\\k = \text{ y-coordinate of center}\\\\r = \text{ radius}\\\\\text{Therefore:}$

$\text{In the equation } (x - 7)^{2} + (y + 4)^{2} = 49:$

$h = 7\\\\k = -4\\\\r = \sqrt[]{49} = 7 \\\\\text{So:}$

$\text{Center at } (7, -4), \text{ Radius of } 7.$

3 0

3 years ago

yulyashka [42]

Answer:

SA = 1099 square inches.

Step-by-step explanation:

Just plug into the formula

SA = 2pir^2 + 2pi r h where pi = 3.14, r = 5 and h = 30

SA = 2 (3.14) (5^2) + 2 (3.14)(5)(30)

SA = 157 + 942

SA = 1099 square inches.

6 0

3 years ago

VikaD [51]

7-15= -8
so -8 degrees celsius

8 0

2 years ago

ANEK [815]

Sq32/8 = sq4
It would be c. 2

5 0

2 years ago

Pavlova-9 [17]

I believe it would be 8 km in five miles. I hope this helped ^^

7 0

3 years ago