4.A hall is of length 30 m and breadth 20 m. It is surrounded by a 3 m wide verandah on the outside.Find the area of the verandah. Also find the number of tiles of dimensions 50 cm 50 cm which willbe required to cover the verandah.
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Step-by-step explanation:
The area of the verandah
= area(hall with verandah)-area(hall)
=(30+3)(20+3)-(20×30)
=33×23-600
=759-600
=159msq
therefore,
the no. tiles required =50×50
=2500cmsq
=2500÷100
=25m
=159×25
=3975
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