Q106 of 131 Page 226

A room is 4.5 m long and 4 m wide. The floor of the room is to be covered with tiles of size 15 cm by 10 cm. Find the cost of covering the floor with tiles at the rate of ₹ 4.50 per tile.

Area of the floor = 4.5 × 4 = 18 m2 = 18,0000 cm2 (1 m = 100 cm)


Area of one tile = 15 × 10= 150 cm2


Number of tiles required to cover the floor = = 1200


∴ Cost of covering the floor with tiles at the rate of Rs. 4.50 per tile = 4.5 × 1200 = Rs. 5400


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