Its 2.59%. i mean i figured it out and i got 2.59%
So I think the rule is that you divide two exponents with the same base, you keep the base and subtract the powers.
In this question, you are given the width( 20 miles), the length(28 miles) and the height( 1 inch). You are asked to count the rain water volume which was going with formula length x width x height. But the unit asked is ft, so you need to convert them all. The calculation would be:
Water volume= length x width x height
Water volume= 20 miles x 5280ft/miles x 28 miles x 5280ft/miles x 1inch x 1ft/12inch
Water volume = 1300992000 cubic ft.
Then its midpoint = (-2, 3)