If the length and the breadth of a rectangle are in the ratio 4:3 and perimeter of given rectangle is 28 cm, find its length and breadth.

4 cm, 3 cm

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8 cm, 6 cm

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12 cm, 9 cm

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16 cm, 12cm

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Solution

The correct option is B 8 cm, 6 cm
Let the length and breadth of the rectangle be 4y and 3y respectively.
Given Perimeter = 28 cm
Perimeter of rectangle = 2(length + breadth )
28 = 2(4y + 3y) = 2(7y) = 14y
$⟹$ y = 2
Hence Length = 4y = 8 cm
Breadth= 3y = 6 cm

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