ICSE Class 7 Answered
square tiles of side 20 cm are to be laid on the floor of a room 10 m by 4.5 m.how many tiles will be needed ? find the cost of putting the tiles at rupeed 131.40 per tile
Asked by singhaprajita7144.7sdatl | 24 Apr, 2020, 10:20: AM
Expert Answer
Dimnesions of the roos is 10m x 4.5m = 1000cm x 450 cm
Area of the room = 1000 x 450 cm2 = 450000 cm2
Length of each side of the square tile = 20 cm
Area of tile = 20 x 20 cm2 = 400 cm2
No. of tiles to be laid = 450000/400 = 1125
Cost of one tile = Rs. 131.40
Total cost = 1125 x 131.40 = Rs. 147825
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