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The circumference of a circle is measured as 56 cm with an error 0.02cm. The percentage error in its area is....

 Apr 21, 2021
 #1
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1/14%

 Apr 21, 2021
 #2
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I think...   

 

Ratio of estimated area to possible smallest area       56^2: 55.8^2 = 3136:3113.64

difference 22.36

 

22.36/3136 *100 % = approx 0.713%

 

There might be a better way to do this.

 Apr 21, 2021
edited by Melody  Apr 21, 2021

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