The circumference of a circle is measured as 56 cm with an error 0.02cm. The percentage error in its area is....
1/14%
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.
+132 
