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?

Assessment: JAMB UTME - Mathematics - 1992 Subject: General Mathematics

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 =  π r 2 = π × 5 × 5 = 25 π
Area error =  π × 0.1 2 = 0.01 π
∴  % error =  0.01 π 25 π × 10

Download The App On Google Playstore

Everything you need to excel in your exams

Green Bridge CBT Mobile App
Personalized AI Learning Chat Assistant
200,000+ Exam Questions Across IGCSE, JAMB, WAEC & NECO
Over 3,900 Lesson Notes
Offline Support - Learn Anytime, Anywhere
Green Bridge Timetable
Literature Summaries & Potential Questions
Track Your Performance & Progress
In-depth Explanations for Comprehensive Learning