MATHEMATICS
JAMB 2009 - Question 29
Mathematics 2009 JAMB Past Questions - Question 29: Find the radius of a sphere whose surface area is 154cm².
A:
B:
C:
D:
Correct Answer
B
Explanation
The surface area of a sphere is given by the formula:Surface Area = 4πr²where r is the radius of the sphere.Given that the surface area is 154 cm², we can set up the equation:154 = 4πr²To find the radius, we need to isolate r. Divide both sides of the equation by 4π:154 / (4π) = r²r² = 154 / (4π)r² ≈ 12.27Taking the square root of both sides, we find:r ≈ √12.27r ≈ 3.50 cmTherefore, the radius of the sphere is approximately 3.50 cm.
Frequently Asked Questions
Examkits is a JAMB CBT practice platform that provides over 20 years of past questions, Post UTME questions, and detailed video solutions to help students prepare for their exams.
You can practice JAMB past questions online, on Android, or on a desktop using the Examkits app. Just register on our website and choose your preferred device.
Yes. Our Android and Windows versions support offline usage. Once downloaded and activated, no internet is required to use most of the features.
Yes, Examkits provides detailed video explanations for all JAMB past questions from 2000 to 2024, helping students understand how to solve each problem.
Examkits offers free practice for some subjects. However, full access requires a one-time affordable activation fee for each version of the app.