15. Jakir has a 18m x 14m rectangular plot of land. There is a square portion of
land without the garden. Let's also find how many square tiles of side 2 dcm. will be
required to cover this vacant portion of land.
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Answer:
Length of a rectangular hall L=40 m
Breadth of the rectangular hall B=18 m
So, the area of hall
=L×B=40×18=720 m
2
Since,
Length of tiles l=1 m
Breadth of tiles b=50 cm=0.5 m
So, the area of each tile
=l×b=1×0.5=0.5 m
2
Therefore, the numbers of tiles are required
=
0.5
720
=1440
solve this by putting your values