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The area of the ring (in sq. cms) whose inner radius is 3.5 cms and outer radius is 10.5 cms is :
Correct Answer: (c)
Official keyThis question appeared in the NPSC Prelims 2018 examination (GS). It is Question 132 out of 200 questions in this paper.
This question was part of the NPSC Prelims 2018 (GS). The NPSC Prelims examination tests candidates on general studies, current affairs, and aptitude through multiple-choice questions.
Practice previous year questions from all NPSC Prelims papers and compare patterns with UPSC Prelims PYQ to identify overlapping topics.