Q3 How many rectangular tiles of
length 12 cm and breadth 5 cm will
be needed to fit in a rectangular
region whose length is 70 cm and
breadth is 36 cm
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(a) Area of region = 100 cm x 144 cm = 14400 cm.sq
Area of one tile = 5 cm x 12 cm = 60 cm.sq
Number of tiles = \frac{Area\ of\ region}{Area\ of\ one\ tile}Area of one tileArea of region = 240
Thus, 240 tiles are required.
(b) Area of region = 70 cm x 36 cm = 2520 cm.sq
Area of one tile = 5 cm x 12 cm = 60 cm.sq
Number of tiles = \frac{Area\ of\ region}{Area\ of\ one\ tile}Area of one tileArea of region = 42
Thus, 42 tiles are required.
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