Question

A marble tile measures 10cm *12cm.How many tiles will be required to cover a wall of size 3m*4m?Also ,find the total cost of the tiles at the rate of rupees 2 per tile

Answer 1

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

4.5

Answer 2

$\bold \green{\underline {Step\:by\:step\:explanation:-}}$

$\red\leadsto$Total Cost of tiles = Cost of one tile times * No of tiles.required

$\red\leadsto$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

$\red\leadsto$Area of the wall = 400 * 300 = 120000cm²

$\red\leadsto$No of tiles required = 120000/120 = 1000 tiles

$\red\leadsto$Total cost of tiles = 1000 * 22.5 = Rs 22500