A rectangular pyramid measures three feet by four feet at the base, and has a height of seven feet. Find its volume. A. 21 ft3 B

Question

3 years ago

5

. 42 ft3 C. 28 ft3 D. 84 ft3

1 answer:

sweet-ann [11.9K] · Answer 1 · 2022-07-12T13:45:49+03:00

Answer:

C. 28 ft³

Step-by-step explanation:

The general formula for the volume of a pyramid:

V = $\frac{1}{3}Bh$ , where B = the area of the base and h = height of the pyramid

Since the base is a rectangle, we can find area using the formula:

A = l x w or A = 3 x 4 = 12 ft²

Using B = 12 and h = 7:

V = $\frac{(12)(7)}{3}$

V = 28 ft³