In expressing a

Question

In expressing a length 81.472 km as nearly as possible with three significant digits . Find the percentage error.

Options:

A . 0.034%

B . 0.035%

C . 0.036%

D . 0.037%

Answer: Option A

Error = (81.5 - 81.472 ) km = 0.028.

`:.` Required percentage = `(0.028/81.472 xx 100)`% = 0.034%.

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