how many litres of water in pool 5ft deep w/ diam. of 20 ft

[frankie10]

in the book it says (remember 1m^3 of water is 1000L)

[stapel_eliz]

in the book it says (remember 1m^3 of water is 1000L)

Yes. But you didn't convert "feet" to "meters", so instead of converting cubic meters to liters, you are converting cubic feet to liters. (Or else, start over at the beginning, and convert the "feet" to "meters" in the first place.)

This is why you need to keep track of your units.