Length and breadth or If breadth of rectangle in three-fourth of its length and perimeter is 140 cm, find the
length and breadth of rectangle.
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The length and breadth of a rectangle are in the ratio 3:2 . If its perimeter is 1 metre, 40 centimetres, how would one find the dimensions of the given rectangle?

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3 Answers



C. S. Sharma, former Senior Environmental Scientist/Additional Director (1983-2017)

Answered January 11, 2020 · Author has 7.5K answers and 5.1M answer views

Friends..!

Let the rational between length and breadth of rectangle be x

Thus length is 3x and breadth is 2x

We know perimeter of rectangle = 2 ( length + breadth)

Perimeter = 1 meter 40 centimetre = 140 cm.

140 cm = 2 (3x + 2x)

140 cm = 2 (5x)

140 cm = 10x

10x = 140

x = 140/10

x = 14

The rational is 14. Thus the length and breadth of rectangle is

Lengths of rectangle 3x = 3 × 14 = 42 cm.

Breadth of rectangle 2x = 2 × 14 = 28 cm.

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