Czgy9ZT-0 Situation. A tank, open at the top, is made of sheet iron 1 in. thick.

Situation

A tank, open at the top, is made of sheet iron 1 in. thick. The internal dimensions of the tank are 4 ft. 8 in. long; 3 ft. 6 in. wide; 4 ft. 4 in. deep. Salt water weighs 64 lb/ft3 and iron is 7.2 times as heavy as salt water.