Allied & ICAR Exam Bank • ALLIED_1789 MCQ • 2 Marks

Section 8: General Aptitude

Quantitative Aptitude

Subtopic: Ratios & Percentages

Question Statement:

If the height of a cylinder is increased by 15% and its radius is decreased by 10%, the percentage change in its curved surface area is:

Options:

  • (A) 3.5% increase
  • (B) 5.0% increase
  • (C) 2.5% decrease
  • (D) 4.0% increase

Answer Key:

A

Step-by-Step Solution & Explanation

Curved surface area $\propto r h$. Factor $= 0.90 \times 1.15 = 1.035$, which is a 3.5% increase.
← Previous (ALLIED_1788) Next (ALLIED_1790) →

Practice In Authentic CBT Exam Interface

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

Launch CBT Mock Test