Question

Confused with this question?
I have to find the surface area.

http://i.imgur.com/A20kdqb.png

But every time I plug in what I have for the formula it gives me this: 2148.849 which isn't an option.

Answer 1

looks you're using r = 19, which is not the radius.

Answer 2

Mkay, then how do I find the radius?

Answer 3

19 is the diameter. radius = 19/2

Answer 4

AH. Thank you! (:

Answer 5

np :)