# How many tiles wh

(a) We know that,

Area of rectangle = Length × Breadth

It is given in the question that,

Length = 100 cm

Therefore,

= 100 × 144

= 14400 cm2

Therefore,

Area of one tile = 12 × 5

= 60 cm2

Hence,

Number of tiles required =

= 240

Therefore, total 240 tiles are required

(b) We know that,

Area of rectangle = Length × Breadth

It is given in the question that,

Length = 100 cm

Therefore,

= 70 × 36

= 2520 cm2

Area of one tile = 60 cm2

Hence,

Number of tiles required =

= 42

Therefore, total 42 tiles are required.

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