Question

How many tiles whose length and breadth are 12 cm and 5

cm respectively will be needed to fit in a rectangular region

whose length and breadth are respectively:

a)100 cm and 144 cm

b)70 cm and 36 cm​

Answer 1

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Answer 2

: Required Answer

(a) Area of rectangle = 100 × 144

= 14400 cm

Area of one tile = 5 × 12

= 60 cm2

Number of tiles = (Area of rectangle) / (Area of one tile)

= 14400 / 60

= 240

Hence, 240 tiles are needed

(b) Area of rectangle = 70 × 36

= 2520 cm2

Area of one tile = 5 × 12

= 60 cm2

Number of tiles = (Area of rectangle) / (Area of one tile)

= 2520 / 60

= 42

Hence, 42 tiles are needed.