Question

A rectangular tank measures 30cm by 15 cm by 20 cm. It contains water to a depth of 15 cm. How many metal cubes of edge 5 cm need to be placed in the water to raise the water level to the brim of the tank?

Answer 1

(30*15*20 - 30*15*15)/5^3 = 18

Answer 2

70

Answer 3

90cm 70cm 1m tank have contain howmany litters of water