The circumference of a circle is measured as 28cm with an error of 0.01cm. The percentage error in the area is `1/(14)` (b) `0. 01` (c) `1/7` (d) none of these

Explanation

Circumference `{C}=2 \pi {r}`


`\Rightarrow {r}=\frac{14}{\pi} `



Also,`\frac{{dC}}{{dr}}=2 \pi`


Area of circle `{A}=\pi {r}^{2}`
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