Allied & ICAR Exam Bank • ALLIED_1897 MCQ • 2 Marks

Section 8: General Aptitude

Quantitative Aptitude

Subtopic: Numerical Computation

Question Statement:

If the radius of a sphere is increased by 20%, by what percentage does its surface area increase?

Options:

  • (A) 44%
  • (B) 40%
  • (C) 20%
  • (D) 48%

Answer Key:

A

Step-by-Step Solution & Explanation

Surface area $\propto r^2$. New area $= (1.2)^2 = 1.44$, which is a 44% increase.
← Previous (ALLIED_1896) Next (ALLIED_1898) →

Practice In Authentic CBT Exam Interface

Test your skills under authentic timed conditions with live scoring and AIR percentile ranking.

Launch CBT Mock Test