1.

How many tiles whose length and breadth are 12 cm and 7 cm respectively will be needed to fill in a rectangular floor whose length and breadth are 70 cm and 48 cm respectively?​

Answer»

ong>ANSWER:

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 tile

Area 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 tile

Area of region

= 42

Thus, 42 tiles are required.



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