A marble tile measures 10 cm x 12 cm. How many tiles will be required

1.	A marble tile measures 10 cm x 12 cm. How many tiles will be required to cover a wall of size 3 m x 4 m? Also, find the total cost of the tiles at the rate of Rs 2 per tile.
Answer» Given area of the wall = 3 m x 4 m = 12 m² Also given that area of one marble tile = 10 cm x 12 cm = 120 cm² = 0.012 m² [Since 1 m² = 10000 c m²] Number of tiles required to cover the wall = Area of wall/ Area of one marble tile = 12/0.012 = 1000 tiles Cost of one tile = Rs. 2 Total cost = Number of tiles x Cost of one tile = Rs. (1000 x 2) = Rs. 2000

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

Answer»

Given area of the wall = 3 m x 4 m

= 12 m²

Also given that area of one marble tile = 10 cm x 12 cm

= 120 cm²

= 0.012 m² [Since 1 m² = 10000 c m²]

Number of tiles required to cover the wall = Area of wall/ Area of one marble tile

= 12/0.012

= 1000 tiles

Cost of one tile = Rs. 2

Total cost = Number of tiles x Cost of one tile

= Rs. (1000 x 2)

= Rs. 2000