Question 1 Report
The radius of a circle is given as 5cm subject to an error of 0.1cm. What is the percentage error in the area of the circle?
Answer Details
Area = πr2=π×5×5=25π π r 2 = π × 5 × 5 = 25 π Area error = π×0.12=0.01π π × 0.1 2 = 0.01 π ∴ ∴ % error = 0.01π25π×10 0.01 π 25 π × 10 =0.0125×100=125
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