A geometry problem by A P
Geometry
Level
2
A cylinder is 24 inches tall and has a circumference of 15 inches. A rope is wrapped around it exactly 3 times, connecting a point on the upper rim to the lower rim. What is the length in inches of the rope?
The answer is 51.
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If we unravel the cylinder, we have three 8-15-17 right triangles with the rope being the 17, so 3 ⋅ 1 7 = 5 1