Question

This is a picture of a square pyramid and the net for the square pyramid.

What is the surface area of the square pyramid?

108 ft²
120 ft²
144 ft²
252 ft²

Answer 1

144 mate. That is the answer.

Answer 2

we know that
surface area of the square pyramid=area of the base+4*[area of lateral triangle]

area of the base=b²----> area of square
b=6 ft
area of square=6*6---> 36 ft²

area of lateral triangle=b*h/2
b=6 ft
h=9 ft
area of lateral triangle=6*9/2---> 27 ft²

surface area of the square pyramid=36+4*27----> 144 ft²

the answer is
144 ft²