Question

What is the surface area of the square pyramid?

Answer 1

D

Explanation:

The formula for the surface area of a square pyramid is
`a^2+2a\sqrt{(a^2)/(4)+h^2}`, where a is the length of one of the base side lengths and h is the height. Plugging in the given values into this equation, you get:

`75^2+2(75)\sqrt{(75^2)/(4)+90^2}=`

`5625+150\cdot √(9506.25)=`

`5625+14625=`

`20,250` square yards, or answer choice D.

Hope this helps!