Question

Parikshit makes a cuboid of plasticine of sides 5 cm, 2 cm, 5 cm. How many such
cuboids will he need to form a cube?

Answer 1

Given numbers = 5×2×5

Since, Factors of 5 and 2 both are not in group of three.

Therefore, the number must be multiplied by 2×5×2  = 20 to make it a perfect cube.

Hence he needs 20 cuboids.

hope this helps u.

Answer 2

Hello!

Least Length of Cube =10

Volume of cube =10^3=1000

Dimensions of cuboid =5*2*5

Volume of cuboid =5*5*2=50

So number of Cuboid required to make a cube =1000/50=20 cuboids


★ Thus, 20 cuboids of dimensions 5*2*5 are,required to make a cube

hope helped!!