Question

How many cuboids of sides 5 cm, 2 cm and 5 cm are needed to form a cube?​

Answer 1

Answer:

20 such cuboids are required to form a cube

Step-by-step explanation:

Length of each edge of the cube = LCM of 5cm,2cm,5cm

= 10cm

Therefore, volume of the cube = 10 × 10 × 10

Volume of 1 cuboid = 5 × 2 × 5

Therefore, no. of cuboids required to form a cube = volume of cube÷volume of 1 cuboid

= (10 × 10 × 10) ÷ (5 × 2 × 5)

= 2 × 5 × 2

= 20