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Practice mode Volume and Surface Area

A copper sphere of radius 3 cm is melted and drawn into a wire of uniform radius 0.1 cm. What is the length of the wire?

Correct answer A. 36 m

Explanation

4/3 x π x 27 = π x 0.01 x L, so L = 36 / 0.01 = 3600 cm = 36 m.

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