Question

What is the surface area of the right cone below?

O A. 126x units
O B. 54 units
OC. 63x units
D. 998 units
O

Answer 1

`SA=54\pi\ units^2`

Explanation:

we know that

The surface area of the cone is given by the formula

`SA=\pi r^(2)+\pi rl`

where

r is the radius of the base

l is the slant height

we have

`r=3\ units\\l=15\ units`

substitute

`SA=\pi (3)^(2)+\pi (3)(15)`

`SA=54\pi\ units^2`