Post-UTME Mathematics 2019 Objective — Question 22
Question 22 of 50 from the Post-UTME Screening (Post-UTME) Mathematics 2019 Objective paper, with the correct answer and a full explanation.
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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?
- A. 1/25
- B. 1/4
- C. 4Correct
- D. 25
Explanation
% error in area ≈ [π(5.01)²-π(5)²]/π(5)² x 100 ≈ 4%.
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