Problem: A 6-inch and 18-inch diameter pole are placed as in the figure and bound together with wire. The length of the shortest wire that will go around them is:
Answer Choices:
A. 123β+16Ο
B. 123β+7Ο
C. 123β+14Ο
D. 12+15Ο
E. 24Ο
Solution:
The shortest length consists of the two external tangents β and the two circular ares l1β and l2β.
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