Question

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

Answer 1

Answer:

  261 in²

Step-by-step explanation:

The surface area of a square pyramid can be found from the formula ...

  A = s(s +2h)

where s is the side length of the base and h is the slant height of a face.

__

For s = 9 in, and h = 10 in, the surface area is ...

  A = (9 in)(9 in +2×10 in) = (9·29) in² = 261 in²

The surface area of the square pyramid is 261 square inches.