Question

a rectangular tank,50cm long and 30cm wide,contains water upto a height of 9 cm.a box of dimensions 25cm,25cm,20cm is not placed in the tank so that its square faces rest on the bottom of the tank. the quantity of the water that must be poured into the tank in order to just cover the box is .....with detailed solution

Answer 1

since the water is already 9 cm deep, another 11 cm must be added. So, the water added is

50*30*11 - 25*25*11