The ratio between the perimeter and the breadth of a rectangle is 5 : 1. If the

Question

The ratio between the perimeter and the breadth of a rectangle is 5 : 1. If the area of the rectangle is 216 sq. cm, what is the length of the rectangle?

Answer: Option B

2(l + b)
=
5
b
1

2l + 2b = 5b

3b = 2l

b =
2
l
3

Then, Area = 216 cm²

l x b = 216

l x
2
l
= 216
3

l² = 324

l = 18 cm.

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