Question

A marble tile measures 10cm by 12cm. How many tiles will be required to cover a wall of size

3m by 4m? Also find the cost of tiles at the rate of Rs 20 per tile .​

Answer 1

$Given :-$

A marble tile measures 10cm by 12cm. How many tiles will be required to cover a wall of size

3m by 4m? Also find the cost of tiles at the rate of Rs 20 per tile .

$Solution :-$

Total Cost of tiles = Cost of one tile * No of tiles required

No of tiles required = Total area of wall / Area of 1 tile

Area of one tile = 12 * 10 = 120 cm²

1 m = 100cm, 3m = 300cm and 4m = 400cm

Area of the wall = 400 * 300 = 120000cm²

No of tiles required = 120000/120 = 1000 tiles

Total cost of tiles = 1000 * 22.5 = Rs 22500