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Question
A copper sphere of 12 cm diameter is drawn into a wire of 4 mm diameter. What is the length (in cm) of the wire?
12 सेमी व्यास वाले ताँबे के एक गोले को 4 मि.मी व्यास वाले एक तार के रूप मे खींचा जाता है। तार की लंबाई (सेमी में) क्या है?
A.
7200
B.
8342
C.
7823
D.
9000
Answer ( Option A)

7200

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