Question

The radius of the sphere is 9 inches. Which equation can be used to find the surface area of the sphere?

Answer 1

B. S = 4 pi r squared = 4 pi (9) squared

Answer 2

Option (2)

Explanation:

Formula to get the surface area of a sphere is,

Surface area = 4πr²

Here 'r' = Radius of the sphere

We have to calculate the surface area of a sphere with radius r = 9 inches.

By substituting the value of r in the formula,

S = 4π(9)²

Therefore, Option (2) will be the correct option.