Question

What is the surfacearea of the cone?2A 225π in²B 375m in²C 600T in²D 1000 in 225 in.15 in.

Answer 1

We are given a cone whose radius is 15 inches and slant height is 25 inches. We need to solve for its surface area.

To find the surface area of a cone, we use the following formula:

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

where r = radius and l = slant height.

Let's substitute the given.

`\begin{gathered} SA=\pi(15)(25)+\pi(15^2) \\ SA=375\pi+225\pi \\ SA=600\pi \end{gathered}`

The answer is 600 square inches.