discuss-forum?question_id=199092-BD-Merit-Freelancing,-BCS,-Bank,-Primary,-Admission,-NTRCA

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1.

A. $21 π m^{2}$
B. $21 π m^{2}$
C. $21 π m^{2}$
D. $21 π m^{2}$

Answer: Option A

Explanation:

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