Question

Find the cost of flooring a room 7.5m by 6m with square tiles of side 30 cm at the rate rupees 6 per tile.​

Answer 1

Step-by-step explanation:

Area of the room = 7.5 × 6 = 45 m = (45×1000) = 4500 cm

Area of 1 square tile = 30 × 30 =900 cm

No. of tiles = Area of the room/ Area of 1 square tile

No. of the tiles = 4500/900 = 5 tiles

Cost of putting the tiles = 6 × 5 = Rs 30

Answer 2

Length = 7.5 m

Breadth = 6 m

Area of rectangle = Length X Breadth

= 7.5 X 6

= 45 m

Cost of flooring a room = Area X Cost of flooring per side

= 45 m* X 30 cm

= 135000cm or 1350m

* 1m = 100cm

45 m = 4500cm