a rectangular Holi 16 m long and 20 m wide . how many marble slabs of size 25 cm × 15 CM are needed to cover the floor of the hall?
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area of floor of hall÷area of marble slab
area of floor=16×20=320sq.m
area of marble slab=25×15=375sq.cm
=0.0375m
so marble slab required=320÷0.0375
=8533 marble
area of floor=16×20=320sq.m
area of marble slab=25×15=375sq.cm
=0.0375m
so marble slab required=320÷0.0375
=8533 marble
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