Answer: 540 ft³
Step-by-step explanation:
The volume of pyramids is [tex]\frac{1}{3} Bh[/tex], where:
- B = area of base = [tex]\frac{15*18}{2} =\frac{270}{2} =135ft[/tex]
- h = height = 12ft
Therefore, the volume = [tex]\frac{1}{3} (135)(12)=\frac{1}{3}(1620)=\frac{1620}{3} =540[/tex]
