(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

The radius of a circle is measured to be 14.3+-0.3cm. Find the circle's area and the uncertainty in the area.

I don't understand how to correctly apply uncertainty equations with sigma and partial derivatives to these types of problems.

2. Relevant equations

A=(pi)(r^2)

(pi)(r^2)=642.4cm

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# Uncertainty in area of a circle

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