Relevant Competitive Tests:
The volumes of two cones are in the ratio 1 : 10 and the radii of the cones are in the ratio of 1 : 2. What is the length of the wire?
A. 2 : 5Correct Answer
B. 1 : 5
C. 3 : 5
D. 4 : 5
Correct Option: A. 2 : 5
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