Question

find the surface area of the sphere. sa = ? π cm² leave your answer in terms of π sa = 4πr²

Explanation:

Step1: Substitute the radius into the formula

Given the formula for the surface area of a sphere \(SA = 4\pi r^{2}\), and \(r = 4\) cm.
Substitute \(r = 4\) into the formula: \(SA=4\pi\times(4)^{2}\).

Step2: Calculate the value

First, calculate \((4)^{2}=16\). Then, \(4\pi\times16 = 64\pi\).

Answer:

\(64\)