To calculate the surface area of a pyramid, we can use the following formula, where P is the perimeter of the base, l is the slant height, and B is the area of the base.
S=1/2Pl+B
The base of the pyramid is a square with the side length s of 9meters. Let's calculate its perimeter P!
P=4( 9) ⇒ P= 36m
The area of the square equals the squared length of the side.
B= 9^2 ⇒ B= 81m^2
We are also given that the slant height l is 10meters. Let's substitute all of these values into the formula for the surface area and calculate it.
