Question

What is the surface area of a sphere with radius 3?O A. 36pi units²OB. 9pi units²O C. 3pi units²O D. 18pi units²

Answer 1

Given:

The radius of the sphere = 3

Find-:

The surface area of the sphere

Explanation-:

The surface area of spere is:

$\text{ Area }=4\pi r^2$

Where,

$r\text{ = Radius}$

Give radius is 3 then surface area is:

$\begin{gathered} \text{ Area }=4\pi r^2 \\ \\ \text{ Area }=4\pi(3)^2 \\ \\ =4\pi\times9 \\ \\ =36\pi \end{gathered}$

So the surface area is 36pi units²