Answer:
Yeah, it's a triangular pyramid.
:)
661.5 :)
Step-by-step explanation:
So we know the formula is 1/3*B*H, and the height is 15! That means we have to solve for b!
10.5 * 25.2 = 264.6 Now we divide 264.6/2 to get 132.3.
Now we can use the formula.
132.3 * 15 * 1/3 = 661.5 :)
