Find the volume of a pyramid with a square base, where the side length of the base is 12.8, and the height of the pyramid is 20.4 in. Round your answer to the nearest tenth of a cubic inch.
The formula to calculate the volume of a pyramid is V = (1/3) * base area * height.
First, we need to find the area of the square base:
Area = side length^2
Area = 12.8^2
Area = 163.84 square inches.
Now, we can calculate the volume:
V = (1/3) * 163.84 * 20.4
V = (1/3) * 3348.096
V = 1116.032 cubic inches.
Therefore, the volume of the pyramid is 1116.0 cubic inches.