To answer this question we will use the following formulas to compute the volume of a rectangular prism and a cylinder:
From the given diagram we get that the length of the rectangular prism is 24ft, its width is 16ft and its height is 20ft, therefore its volume is:
Also, from the given diagram we get that the radius of the cylinder is 4ft and its height is 20ft, therefore its volume is:
Then:
Answer: