Question

Use the given circumference to approximate the surface area of the spherical object. Round the answer to the nearest square centimeter.

c = 27 cm

@Directrix

Answer 1

What kind of object is shown. Is it a complete sphere?

Answer 2

its a bowling ball

Answer 3

First, use the circumference formula to find the radius of the bowling bowl.

Answer 4

C = 2* pi*r
27 = 2 * 3.14 * r

Solve for r.

Answer 5

Did you get r = 4.3 (rounded)

Answer 6

i dont know how to get r

Answer 7

Back to the surface area of the sphere:

A = 4 * π * r²

A = 4 * π * (4.3)²

Answer 8

232

Answer 9

Yes, 232 to the nearest square cm

Answer 10

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