A square pyramid has a base with perimeter of 28 inches and a height of 24 inches. Find the surface area and volume of the pyramid. I don't understand it, and theirs no diagram.

Question

anonymous · Answer

volume = 1/3  *   height  *  area of base 
height = 48
one side of the base = 28/4 = 7 ins
so area = 7^2 = 49

volume = 1/3  * 24 * 49 =  392     cu ins

anonymous · Answer

sorry - second line was wrong  height = 24
but i used 24 for calculation

anonymous · Answer

surface area is more complicated - you ned to calculate the slant height of the 4 sides of the pyramid 
slant height = sqrt(24^2 + 3.5 ^2) = 24.254 ins
area of each side = 24.254 * 3.5 = 84.89 
area of 4 sides = 339.56
+ area of square base 49:
total surface area = 388.56 sq ins