Question

A rectanglular floor is 15m long and 12 m wide. Square stones of 50 cm side are to be fixed on the floor. Calculate the number of stones required for the purpose.find the cost of fixing the stones at the rate of Rs.18.50 per stone.

Answer 1

Length of the floor=15m
Width of the floor=12m
Area of the floor=length×width
15m×12m=180m²

Side of 1 square stone=50cm
Area of 1 square stone=side²
(50cm)²=2500cm²

1cm²=(1/10000)m²
2500cm²=(2500/10000)m²
2500cm²=0.25m²

Number of tiles required=
Area of floor/Area of each tile
180m²/0.25m²=720 tiles

Cost of 1 tile=Rs.18.50
Cost of 720 tiles=Rs.18.50×720=Rs.13320

Therefore 720 tiles and required and the total cost is Rs.13320