an open water tank with length 20 m and width 15 m holds 4800 cubic metres of water.calculate the total surface area of the part of the tank in contact with water

Answer 1

We have to find how high the water level is
(20)(15)(h) = 4800
h = 16
So we have the base: 20(15) = 300
and the four sides: 2(20)(16) + 2(15)(16) = 1120

Surface area of the problem = 1420 m^2

check my arithmetic