Question

What is the surface area of the regular pyramid given below?

Answer 1

each trianglar side has an area: (1/2)*8*9=36
the base is a square with an area of 8*8=64
so the total surface area is 36+36+36+36+64=208

Answer 2

To find the surface area of any shape, you have to find the area of each side on the shape and then add them all up together:
Base: 8*8 = 64
Height(the triangle part) : 8*9 = 72
72/2 = 36 (Because equation to find area of a triangle is b*h/2)
So there are 4 of those triangle sides so you would do: 36+36+36+36 = 144

Then you add both sides together (base and height) : 64 + 144 = 208