How many gallons of water would it take to fill a 50m by 25 m by 1.5m pool? (1 Liter is 0.001m^3 and 1 gallon is 3.786 Liters)
I would change m to cm.
Volume = 50E2 x 25E2 x 1.5E2 = ?
Convert to L remembering that 1000 cc = 1L.
Convert L to gallons with the factor given.