Paper 1 · Mathematical Reasoning and Aptitude
UGC NET December 2021 June 2022 (11.10.2022) Shift-I
What will be the diameter of a circle having an area equal to that of a square of side 2.0 m?
AAbout 1.256 m
BAbout 2.257 m ✓ Correct
CAbout 0.88 m
DAbout 2.718 m
Correct answer: (B) About 2.257 m — The answer is about 2.257 metres.
Explanation
★The answer is about 2.257 metres.
★The square of side 2 metres has an area of 4 square metres.
★Setting pi times r squared equal to 4 gives r squared as 4 divided by pi.
★So r is the square root of 4 over pi, and the diameter is twice that.
★Working this out gives a diameter of about 2.257 metres.
★The other options do not match this value.
★So the answer is about 2.257 metres.
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