SOLUTION: Hey, I need help finding the surface area of a cone with a radius of 3ft and a slant height of 7ft. thanks

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Question 72064: Hey,
I need help finding the surface area of a cone with a radius of 3ft and a slant height of 7ft.

thanks
Answer by zerosignal(28) About Me  (Show Source):
You can put this solution on YOUR website!
Formula to use is a+=+pi%2Ar%2As
r = 3 & s = 7
a+=+pi%2A3%2A7
a+=+65.97344573ft%5E2