The length and perimeter of a rectangle are in the ratio of 5:18. What will be the ratio of its length and breadth?

A) 4 : 3

B) 3 : 5

C) 5 : 4

D) 4 : 7

Correct answer:
C) 5 : 4

Description for Correct answer:
According to the question,

\( \Large \frac{l}{2(l+b)}=\frac{5}{18} \)

=> 10 l+ 10 b=18 l => 8 l=10 b

=> \( \Large \frac{l}{b}=\frac{10}{8}=\frac{5}{4} \)

l : b = 5 : 4

Hence, ratio of length and breadth of a rectangle is 5 : 4.


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