Question

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

• A. $30$
• B. $15$
• C. $20$
• D. $25$

Answer 1

The correct option is C $20$

In a cube all sides are equal

least length of cube $=10$ (as width of cuboid = 2)

volume of cube $=(10{)}^3$

volume of cuboid $=5\times 2\times 5=50$

No. of cuboid $=\frac{1000}{50}=20.$