A square $A B C D$ is divided equally into $5$ rectangles. The perimeter of each rectangle is $60 c m$ . Find the perimeter of the square.

120 c m

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100 c m

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25 c m

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60 c m

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Solution

The correct option is B $100 c m$
Let the side of square be $x$
The width of each rectangle is $\frac{x}{5}$
The perimeter of rectangle is $2 (l + b) = 2 (x + \frac{x}{5}) 60 = \frac{12 x}{5} x = 25$
The perimeter of square is $100 c m$

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