Celissia built a model pyramid at a foam. Her model is 20 inches high with a rectangular base that is 8 inches long and 12 inches wide. What is the volume of her model in cubic inches
The volume of a rectangular pyramid can be found by multiplying the area of the base by the height and dividing by 3.
First, we need to find the area of the base. The area of a rectangle can be found by multiplying the length by the width.
In this case, the area of the base is 8 inches * 12 inches = <<8*12=96>>96 square inches.
Now, we can find the volume of the pyramid by multiplying the area of the base by the height and dividing by 3.
The volume is (96 square inches * 20 inches) / 3 = 1,920 cubic inches.
Therefore, the volume of Celissia's model pyramid is 1,920 cubic inches.