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Q.

The 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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a

9 cm

b

12 cm

c

8 cm

d

10 cm

answer is D.

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Detailed Solution

Perimeter of the rectangle = 2 [length + breadth]

= 2[9 + 7] = 2 × 16 = 32 cm

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Now the perimeter of the square = Perimeter of rectangle = 32 cm
Therefore, the side of the square = 324 = 8 cm

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