Answer:
The volume of a pyramid is 1243.5 cubic inches.
Explanation:
Given : A pyramid with a square base, where the side length of the base is 18.5 in and the height of the pyramid is 10.9 in.
To find : The volume of a pyramid ?
Solution :
The volume of the pyramid is

Where, a=18.5 in. is the side length of the base
h=10.9 in. is the height of the pyramid.
Substitute the value,



Therefore, the volume of a pyramid is 1243.5 cubic inches.