Question

how many marbles will be required to cover a wall of size 4m by 3m? If a marble tile measures 12 cm by 10 cm. Also find the cost of tiles at Rs. 22.5 per tile?

Answer 1

Ans.

The area of the wall is
(4×3) m^2
= 12 m^2
= (12×10000) cm^2
= 120000 cm^2.

The area of each marble tile is
(12×10) cm^2
= 120 cm^2.

So the number of marble tiles are
(120000 ÷ 120)
= 1000.

Therefore, the required cost for 1000 marble tiles is
Rs (1000 × 22.5)
= Rs 22500.