Question : In a rectangle, the diagonal is 4 times its breadth. The ratio of length to breadth is:

Option 1: $\sqrt{15 } : 1$

Option 2: $\sqrt1: 5$

Option 3: $1: 5$

Option 4: $\sqrt5: 1$


Team Careers360 14th Jan, 2024
Answer (1)
Team Careers360 19th Jan, 2024

Correct Answer: $\sqrt{15 } : 1$


Solution : Diagonal = 4 × breadth
Diagonal 2 = length 2 + breadth 2
⇒ (4 × breadth) 2 = length 2 + breadth 2
⇒ Length 2 = 15 × breadth 2
⇒ Length = $\sqrt{15}$ × breadth
⇒ Length : Breadth = $\sqrt{15} : 1$
Hence, the correct answer is $\sqrt{15} : 1$.

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