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
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