Question

Marie made a model (shown below) of the square pyramid she plans to build when she grows up. Find the surface area of the model. M 2 m 2 start text, space, m, end text, squared 8 m 8 m 5 m 5 m 8 m 8 m

Answer 1

144

Explanation:

Answer 2

`SA=144\ in^2`

Explanation:

The picture of the question in the attached figure

we know that

The surface area of a square pyramid is equal to the area of the square base plus the area of its four congruent triangular faces

so

`SA=b^2+4[(1)/(2)bh]`

where

`b=8\ in\\h=5\ in`

substitute

`SA=8^2+4[(1)/(2)(8)(5)]`

`SA=64+80=144\ in^2`