What does this have to do with math? :/
No Problem! :)
Here is what I found, I don't know if this is what your looking for! :)
https://www.google.ca/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=What%27s+the+lateral+surface+if+r%3D9+and+h%3D15+of+a+cylinder??&*
9.8596 is the answer! :)
What do you need help with?
the answer is 11! :)
Multiply the side length of the base by the slant height and divide by two. Then, multiply by 4. This will give you the lateral surface area of the pyramid. Add the base surface area and the lateral surface area
What does Sa atnd for?