EXERCISE 17(D)
1. How many square tiles of side 30cm will be required for a floor 18m long and 15m
wide? If the cost of a tile is 2.50, find the cost for covering the floor with the tiles.
dor Find
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1) 1st find Area
Area = ( l×b)=
18×15=270
tiles needed = 270/30=9
9 tiles are needed for the floor.
2) cost of one tile=2.50
cost for 9 tile = 2.50 × 9 =
22.5
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