Question

Help me!! Thanks!
A cone with a radius of 8 feet and a slant height of 17 feet is shown below.
What is the surface area of this cone? Use 22 over 7 for pi.

Answer 1

Ok, so \[SA = \pi(r)(s) + \pi(r)^2\]
Where r is the radius of the bottom circle of the cone, and s is the slant height.

So now you can just plug and chug.
r = 8 & s = 17
Which yields,
SA = (22/7)(8)(17) + (22/7)(8)^2, where (22/7) is pi

Can you do it from here?

Answer 2

Yep, I got it thank you!!