Difference between revisions of "2015 UMO Problems/Problem 6"

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== See Also ==
 
== See Also ==
{{UMO box|year=2015|num-b=5|num-a=Last Problem}}
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[[Category:Intermediate Geometry Problems]]
 
[[Category:Intermediate Geometry Problems]]

Latest revision as of 03:03, 6 November 2015

Problem

A triangular pyramid with apex $O$ and base $\triangle{ABC}$ has the property that the perimeter of $\triangle {ABC}$ is $84$. Additionally, one can place a cylinder of radius $4$ and height $10$ completely inside the pyramid such that one of its bases is in the same plane as $\triangle{ABC}$. What is the minimum possible height from $\triangle{ABC}$ to apex $O$? Show that this height is achievable.


Solution

See Also

2015 UMO (ProblemsAnswer KeyResources)
Preceded by
Problem 5
Followed by
Last Problem
1 2 3 4 5 6
All UMO Problems and Solutions