A rectangular pyramid has a base area of 16 in.2

, and a congruent rectangular prism has a volume of 288 in.3
. What is the height of the rectangular pyramid?
Responses

6 in.

18 in.

54 in.

96 in.

1 answer

To find the height of the rectangular pyramid, we can use the formula for the volume of a pyramid, which is:

\[ \text{Volume} = \frac{1}{3} \times \text{Base Area} \times \text{Height} \]

We know the base area is \( 16 , \text{in}^2 \), but we need to find the height (\( h \)) of the pyramid.

We also know that the volume of the rectangular prism is \( 288 , \text{in}^3 \). The volume of a rectangular prism is given by:

\[ \text{Volume} = \text{Base Area} \times \text{Height} \]

However, since we are calculating the pyramid's height, we will use the volume of the pyramid and set it equal to \( 288 , \text{in}^3 \):

\[ 288 = \frac{1}{3} \times 16 \times h \]

Now, multiply both sides by 3 to eliminate the fraction:

\[ 864 = 16 \times h \]

Now, divide both sides by 16 to isolate \( h \):

\[ h = \frac{864}{16} \]

Performing the division:

\[ h = 54 \]

Thus, the height of the rectangular pyramid is \( 54 , \text{in} \).

The answer is 54 in.