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The length of a line measured with a 20 m chain was found to be 250 m. Calculate the true length of the line if the chain was 10 cm longer.
  1. 248.75 m
  2. 249.00 m
  3. 251.25 m
  4. 252.50 m
Explanation
  • Measured length = 250 m
  • Standard chain length = 20 m
  • Chain is 10 cm longer = 0.10 m
  • Actual chain length = 20 + 0.10 = 20.10 m

Formula:

Standard Chain Length​

Substitute:

20

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