\left. \begin array l l l l \text (a) 1.4 0 & \text ( – InterviewSolution

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1.	\left. \begin array l l l l \text (a) 1.4 0 & \text (b) 2.10 & \text (c) 70 & \text (d) 140 \end array \right.
Answer» વિસ્તાર = π આર ^ 2આર ^ 2 = 616 / π હવે આર ^ 2 = 196.17r= 14 approximately

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