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प्रश्न
A wire is bent in the form of an equilateral triangle of each side 20 cm. If the same wire is bent in the form of a square, find the side of the square.
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उत्तर
∵ Each side of the given equilateral triangle = 20 cm
∴ Perimeter of the triangle = 3 x side = 3 x 20 cm = 60 cm,
∴ Perimeter of the square = Perimeter of equilateral triangle
⇒ 4 x side of square = 60 cm
⇒ The side of the square = `60/4`
= 15 cm
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