Question

How many square tiles each of side 20 cm are required to cover the floor of a hall which is 7.2 cm long and 5.8 cm wide. Also find the cost of the tiles required to cover the floor at the rate of Rs 256 per dorzen​

Answer 1

Answer:

Step-by-step explanation:

Area of hall / area of tiles x cost = total cost

Area = 7.2 x 5.8 = 41.76m sq = 417600 cm sq. = area of hall

area of tiles = 20cm x 20cm = 400cm sq.

no. of tiles = 417600/ 400 = 1044 tiles are required.

1 dozen = 12

1044/12 = 87 dozen

cost of 1 dozen = r 256

87 x 256 = Rupees 22,272. Is the ans.

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