First we calculate surface of base.
10 * 6 = 60 feet^2
The Volume of pyramid is calculated by formula:
V = B*H/3
H- height of pyramid
B- surface of base of pyramid
We have both of those so all we have to do is to finish calculation:
V = 60*15/3 = 300 feet^3
Answer is 300 qubic feets
