Question

The length, breadth and height of room is 12m,9m and 6m respectively.How many cubic boxes are needed to fill the room if the side of ecah box is 1.5m?

Answer 1

Volume of room = l*b*h
                          = 12 * 9 * 6
                          = 648 m^3


and volume of one cubic box = a^3
                                               = (1.5)^3
                                               = 3.375 m^3

so no of boxes required = 648/3.375 = 192

Answer 2

no of boxes = v. of room /v. of box
= 12*9*6/1.5*1.5*1.5