To calculate the volume of a pyramid, you can use the formula:
\[ \text{Volume} = \frac{1}{3} \times \text{Base Area} \times \text{Height} \]
In this case, the base of the pyramid is a square with each side measuring 112 feet, and the height (altitude) is 71 feet.
Step 1: Calculate the Base Area
The area of the base (which is a square) can be calculated as:
\[ \text{Base Area} = \text{side} \times \text{side} = 112 , \text{feet} \times 112 , \text{feet} = 12,544 , \text{ft}^2 \]
Step 2: Calculate the Volume
Now, substitute the base area and height into the volume formula:
\[ \text{Volume} = \frac{1}{3} \times 12,544 , \text{ft}^2 \times 71 , \text{feet} \]
Calculating that:
\[ \text{Volume} = \frac{1}{3} \times 12,544 \times 71 = \frac{890,624}{3} , \text{ft}^3 \approx 296,874.67 , \text{ft}^3 \]
Thus, the volume of the pyramid at the Louvre Museum is approximately 296,874.67 ft³.
So the correct response is:
296,874.67 ft³.