Question

How many marble slabs of size 40 cm $\times$ 60 cm will be required to pave the floor of a square room of side 6 metres?

• A. 100
• B. 150
• C. 225
• D. 250
• E. 290

Answer 1

The correct option is B

150

Number of marbles = $\left(\frac{600\times 600}{40\times 60}\right)=150$