Question

A rectangle has a length and width in the ratio of 5:7. If the area of the rectangle is 560 units squared, what is the PERIMETER of the rectangle?

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The sides of a rectangle are in the ratio 7:5 and its perimeter is 96 cm. What is the length of the rectangle?

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2 Answers



Anitej Mukhopadhyay, Student from La Martiniere for Boys, Kolkata

Answered September 8, 2019

Let the sides of the rectangle be 7x and 5x respectively.

According to the problem,

2(7x+5x)=96

=>24x=96

=>x=4

Therefore, the sides are:

7×4=28cm

5×4=20cm

Now,in the question,it is clearly stated that the sides are in the ratio 7:5 and no clue about the length is given.

Hence,the length is either 24cm or 28 cm.

Hope this helps you.