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*9 \\ \\ =36\pi \end{gathered}`

So the surface area is 36pi units²