Question

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✨A floor of length 7 m and breadth 4 m is to be covered by square tiles of side 20 cm is how many tiles are needed?✨
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Answer 1

l=7m
b=4m
area=lxb
=7x4
=28 m sq.
side of sqare tile =20cm=0.2m
area of one tile=0.2x0.2
=0.04m sq.
no. of tiles=28/0.04
=700

Answer 2

area =l×b
=7×4=28
side of tile needed
=0.2m(20÷100)
area of tile=0.2×4
=0.04
tiles needed=28÷0.04
700 tiles are needed