Q4. Length and breadth of a rectangular wire are 9 cm and 7 cm respectively. If the wire is bent into a square, find the length of its side.
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perimeter of the rectangle is equal to perimeter of the square then
perimeter of a rectangle =2(l+b)
=2(9+7)
=2×16
=32
Then
perimeter of a square is also 32 then it side is
4×a=32
a=8cm
hence the side of the square is 8 cm
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