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dameLv1
24 Feb 2022
A hexagonal prism has a height of 165 cm. Its two hexagonal faces are regular hexagons with sides of length 30 cm. Its other six faces are rectangles. A fly and an ant start at point X on the bottom face and travel to point Y on the top face. The fly flies directly along the shortest route through the prism. The ant crawls around the outside of the prism along a path of constant slope so that it winds around the prism exactly n + 1/2 times, for some positive integer n. The distance crawled by the ant is more than 20 times the distance flown by the fly.
What is the smallest possible value of n?
A hexagonal prism has a height of 165 cm. Its two hexagonal faces are regular hexagons with sides of length 30 cm. Its other six faces are rectangles. A fly and an ant start at point X on the bottom face and travel to point Y on the top face. The fly flies directly along the shortest route through the prism. The ant crawls around the outside of the prism along a path of constant slope so that it winds around the prism exactly n + 1/2 times, for some positive integer n. The distance crawled by the ant is more than 20 times the distance flown by the fly.
What is the smallest possible value of n?
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