Question

The figure below is a net for a square pyramid.

8.7 in
9 in
What is the surface area of the square pyramid, in square
inches?

Answer 1

`\large\text{The surface area of the square pyramid} =237.6\ in^(2)`

Explanation:

Formula ====================================

The total surface area of a square pyramid = the base area + the lateral surface area __________________________________

The lateral surface area = the sum of the areas of the four triangular faces

_____________________________________________________

the base area = 9² = 81 in²

`\text{The lateral surface area} =4* (9* 8.7)/(2) =156.6\ in^2`

`\Longrightarrow \text{The total surface area} =156.6+81=237.6\ in^2`