The radius of a circle is given as 5cm subject to an erro...
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?
125
14
4
25
Correct answer is C
% error in Area = π(5.1)2−π(5)2×100π(5)2
= π26.01−25×100π(25)
= 1.0125 x 100%
= 4.04%
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