Question

question 10 of 10 which expression gives the surface area of a sphere with radius r? a. $4pi r^{2}$ b. $4pi r^{3}$ c. $\frac{4}{3}pi r^{2}$ d. $\frac{4}{3}pi r^{3}$

Explanation:

Step1: Recall surface - area formula

The formula for the surface area of a sphere with radius $r$ is $S = 4\pi r^{2}$.

Answer:

A. $4\pi r^{2}$