A wire is in the shape of a rectangle of length 28 cm and breadth 12 cm, if the same wire is bent in the shape of a square, the area of the square would be

240 square cm

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80 square cm

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40 square cm

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400 square cm

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Solution

The correct option is D
400 square cm

Perimeter of the rectangular wire = 2 x (l + b) = 2 x (28 + 12) = 80 cm
Perimeter of square = 4 x side = 80 cm;
Side = 20 cm;
Hence, area of the square = 20 x 20 = 400 cm²

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A wire is in the shape of a rectangle of length 28 cm and breadth 12 cm, if the same wire is bent in the shape of a square, the area of the square would be

The correct option is D 400 square cmPerimeter of the rectangular wire = 2 x (l + b) = 2 x (28 + 12) = 80 cm Perimeter of square = 4 x side = 80 cm; Side = 20 cm; Hence, area of the square = 20 x 20 = 400 cm2

The correct option is D
400 square cm

Perimeter of the rectangular wire = 2 x (l + b) = 2 x (28 + 12) = 80 cm
Perimeter of square = 4 x side = 80 cm;
Side = 20 cm;
Hence, area of the square = 20 x 20 = 400 cm²