Question

find the surface area of the sphere. sa = ? π ft² sa = 4πr² leave your answer in terms of π

Explanation:

Step1: Substitute the radius into the formula

Given the formula for the surface area of a sphere \(SA = 4\pi r^{2}\), and \(r = 18\) ft.
Substitute \(r = 18\) into the formula: \(SA=4\pi\times(18)^{2}\).

Step2: Calculate the value of \((18)^{2}\)

\((18)^{2}=18\times18 = 324\).

Step3: Multiply by 4

\(4\times324 = 1296\).

Answer:

\(1296\)