Question

HELP!!! 15 Points! A triangular pyramid has a volume of 25 ft³. If all its dimensions are doubled, the volume of the new pyramid will be _____ ft³.

50

150

200

400

Answer 1

First, the volume of this pyramid is calculated as:

V = 1/3 * S * H, where S is the base area, and H is the height

Doubling all dimensions means you are doubling x, y, and z

So S is amplified 4 times, H is amplified 2 times

So the total volume is amplified 8 times

Answer is 200