SSC JE Civil Engineering 23-Mar-2021 Shift 2 Paper

Question : 144 of 200

Marks: +1, -0

The length of a line measured by a 30 m chain was found to be 450 m. If the chain was 0.2 links short, then find the true length of the line.

448.0 m
449.1 m
449.8 m
449.6 m

Validate

Solution:

Let True length of the line = L
True or designated length of chain (l) = 100 links
Wrong length of the line measured (L’) = 2000 links
Wrong length of the chain (l’) = 100 - 0.2 = 99.8 links
l’ × L’ = l × L

\L={99.80×450}/100

= 449.1 links

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