A marble tile measures 25cm by 20 cm. How many tiles will be required to cover
a wall of size 4m by 3m?
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Area of marble = lb
= 25×20 =500cm sq.
Area of wall is equal to 4×3=12m sq. =120000cm sq.
No. Of tiles=
area of wall /area of marble
=120000/500= 240 tiles
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