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Prateek Asked :

13-01-2022 Area

Q. 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?

A. 16 cm
B. 18 cm
C. 24 cm
D. Data inadequate


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Dapzoi Verified
Commented on 2022-01-15 11:40:43 (IST)
Answer: Option B

 

Explanation:

2(l + b)/b = 5/1

2l + 2b = 5b

3b = 2l

b = 2/3 l

Then, Area = 216 cm2

l x b = 216

l x 2/3 l = 216

l^2 = 324

l = 18 cm.