Arectangular pyramid has a volume of 1,512 inches cubed, a height of 12 in., and a base length of 21 in. what is the width of its base?
2 in.
6 in.
12 in.
18 in.

Option D. 18 in

Step-by-step explanation:

Since volume of a rectangular pyramid has a volume = 1512 in³

Height of pyramid = 12 in

Rectangular base having length = 21 in

we have to find the width of the base of pyramid.

Since volume of pyramid =

1512 = 4(21b)

1512 = 84b

Therefore width of the rectangular base of pyramid is 18 in

Option D is the answer.

Option D.

Step-by-step explanation:

The volume of a rectangular pyramid is

where, l is the length of the base, w is the width of the base and h is the height.

It is given that

Divide both sides by 84.

The width of its base is 18 in. Therefore, the correct option is D.

2 apples

step-by-step explanation:

taking away equals subtraction. 6-4=2