Find the surface area of a square based pyramid if the edge of the base is 8 inches and the slant height is 20 inches.

Surface area of a square based pyramid:

A = base area + lateral surface area

  = side^2 + side x slant height x 1/2 x 4

  = 8^2 + 8 x 20 x 1/2 x 4

  = 384 (in2)

Hope this helps!

:)

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.