Question

The length of a rectangle is 5/7 of its breadth. If it's perimeter is 48 cm then what is it's length?

Answer 1

Hi...☺

Here is your answer...✌
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Seems that there is a mistake in the question that "The length of a rectangle is 5/7 of its breadth"

But the length is always greater than breath

This statement may be "The Breath of a rectangle is 5/7 of its Length"

★For this here is solution :
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Let the length and breath of rectangle be L and B respectively

Now,
According to the question,

B = (5/7)×L = 5L/7

And

Given that,
Perimeter = 48 cm

2(L+B) = 48cm

2(L+ 5L/7) = 48

=> 12L/7 = 24

=> L/7 = 2

=> L = 14 cm

hence length of given rectangle is 14 cm