Question

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

Answer 1

There are several ways to do it, but I'm using the easiest way
Area of the Base: 64
Area of the triangle (one): 12*8/2 = 48
But there are 4 triangles, so you have to multiply 48 by 4, which will give you 192
Since they are looking for the surface area, simply add them:
64+192 = 256

Answer 2

how did you get 64

Answer 3

area of the square = 8*8 = 64