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प्रश्न
A wire is in the shape of square of side 20 cm. If the wire is bent into a rectangle of length 24 cm, find its breadth.
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उत्तर
Side of square = 20 cm
Perimeter of square = 4 × 20 = 80 cm
Or perimeter of rectangle = 80 cm
Length of a rectangle = 24 cm
∴ Perimeter of a rectangle = 2(l + b)
b = `80/2-24`
b = 40 – 24 = 16 cm
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