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A reservoir is 3 sq miles, the level rises by 7 inches. How many acre-feet of water have been added :)
by mikhailfranco 3y ago
A reservoir is 3 sq miles, the level rises by 7 inches. How many acre-feet of water have been added :)
- mikhailfranco 3y agoBonus point: how many cubic yards of water added?
- db48x 3y agoThe owner of the reservoir doesn’t bother to measure it in square miles, he measures the acreage. Then the acre–feet becomes a trivial computation. Yes, if pressed he might dredge up the obscure fact that a square mile is 640 acres, but then he would have to do long division to convert it, and the whole point is to avoid that kind of complexity.