<?xml version="1.0"?>
<problem xmlns="http://geocentral.net">
<version>3.1</version>
<envelope>
<author>
<name>Stelian Dumitrascu</name>
<email>stelian@geocentral.net</email>
<web>http://geocentral.net/geometria</web>
</author>
<comments>O problemă-model din cadrul Geometriei.</comments>
</envelope>
<text>Află unghiul dintre baza inferioară şi cea superioară a acestui poliedru.</text>
<notepad>
</notepad>
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<figure>
<name>Trunchi</name>
<color>#ffff</color>
<transparent>true</transparent>
<labelled>false</labelled>
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<label>L</label>
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<label>E</label>
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<answer>
<type>number</type>
<value>0.30599244801374387</value>
</answer>
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