Respuesta :

ColeRees
The area of the base is easy, 8 x 8 = 64.

Now for the sides, we must find the are of the triangle, then multiply it by 4 (because there are 4 sides).

Formula of a triangle:

A = 1 / 2 x b x h

1 / 2 x 8 x 22 = 88

88 x 4 = 352

352 + 64 = 416