Question

the surface area of a sphere with a radius of 3 units is 113.04 units squared.
true
false

Explanation:

Step1: Recall sphere surface area formula

The formula for the surface area of a sphere is \( SA = 4\pi r^2 \), where \( r \) is the radius.

Step2: Substitute radius value

Given \( r = 3 \) units, substitute into the formula: \( SA = 4\times\pi\times(3)^2 \).
First, calculate \( 3^2 = 9 \). Then, \( 4\times\pi\times9 = 36\pi \).
Using \( \pi \approx 3.14 \), we get \( 36\times3.14 = 113.04 \) square units.

Answer:

True