Question

What is the surface area of the cone below?

Answer 1

For this case we have that by definition, the surface area of a cone is given by:

`SA = \pi * r * S + \pi * r ^ 2`

Where:

SA: It is the surface area

A: It's the radio

S: It's slant height

Then, replacing the values of the figure in the formula we have:

`SA = \pi * 6 * 15 + \pi * 6 ^ 2\\SA = 90 \pi + 36 \pi\\SA = 126 \pi \ units ^ 2`

ANswer:

Option A