How many soap cakes can be placed in a box of size 56 cm ×0.4 m×0.25 m, if the size of a soap cake is 7 cm×5 cm×2.5 cm?
Size of box = 56 cm×0.4 m×0.25 m
=56 cm×40 cm×25 cm
∴ Volume = 56×40×25 cm3=56000 cm3
Size of a soap cake = 7 cm×5 cm×2.5 cm
∴ Volume = 7×5×2.5cm2=87.5cm3
∴ Number of cakes to be kept in the box
= 5600087.5=640