I want to know if I solved this problem correctly. I calculated it and there was a decrease of 10.9, but I'm not sure. By checking with the formula, a Cylinder with volume 100 cubic feet has a radius of exactly 3 and a height of exactly 3.5367. By decreasing the radius by 10% it becomes 2.7 and the height increased by 10% becomes 3.89037.

sudsw12 Mar 17, 2019