Question

Water is evaporating from a pool at a constant rate. The pool is in the shape of a rectangular solid. The length of the pool is 30 feet and the width of the pool is 20 feet. The depth of the water in the pool decreases by 0.6 feet each day. How fast is the water evaporating, in cubic feet per day, when the depth of the water is 2 feet?

I am looking at old exams to study for my final and they have the answer as 360 cubic feet. I was wondering how did they get that?

Answer 1

The pool is 30 feet by 20 feet.
If the level decreases .6 feet per day then that equals
30 • 20 • .6 = 360 cubic feet per day

Answer 2

Oh wow that easy? Thank you!

Answer 3

u r welcome :-)