Question

A soid cube of side 21 cm is cut into 8 cubes of equal volume. what is the side of the new cube? ​

Answer 1

Answer :

10.5 cm

Solution :

Given,

Side of large cube = 21 cm

Volume of this cube = a³ = 21³ = 9261 cm³

This cube is cut into 8 equal cubes

Volume of small cubes = Vol of large cube ÷ no. of cubes

↬ V = 9261/8

↬ V = 1157.6

↬ a³ = 1157.6

↬ a = 10.5