<?xml version="1.0" encoding="utf-8"?><?xml-stylesheet type='text/xsl' href='general.xsl'?><root><task id="17965" type="1" title="Задание по теме &quot;Аксиомы стереометрии и следствия из них&quot;" task="Площадь поверхности тетраэдра &lt;i&gt;SABC&lt;/i&gt;  равна  &lt;img src=&quot;../../_Content/MathML/EduTask_Node/Task/17965/out1-0.gif&quot; alt=&quot;&quot; class=&quot;mmlimage&quot; height=&quot;54&quot; width=&quot;33&quot; align=&quot;middle&quot; /&gt;, точки &lt;i&gt;K&lt;/i&gt; и &lt;i&gt;M&lt;/i&gt; – центры граней &lt;i&gt;SAC&lt;/i&gt; и &lt;i&gt;SBC&lt;/i&gt;. Найдите длину отрезка &lt;i&gt;KM&lt;/i&gt;." content="&lt;V&gt;  &lt;img src=&quot;../../_Content/MathML/EduTask_Node/Content/17965/out1-0.gif&quot; alt=&quot;&quot; class=&quot;mmlimage&quot; height=&quot;54&quot; width=&quot;17&quot; align=&quot;middle&quot; /&gt;&lt;/V&gt;&lt;br /&gt;&lt;V&gt;  &lt;img src=&quot;../../_Content/MathML/EduTask_Node/Content/17965/out1-1.gif&quot; alt=&quot;&quot; class=&quot;mmlimage&quot; height=&quot;54&quot; width=&quot;17&quot; align=&quot;middle&quot; /&gt;&lt;/V&gt;&lt;br /&gt;&lt;V&gt;  &lt;img src=&quot;../../_Content/MathML/EduTask_Node/Content/17965/out1-2.gif&quot; alt=&quot;&quot; class=&quot;mmlimage&quot; height=&quot;54&quot; width=&quot;17&quot; align=&quot;middle&quot; /&gt;&lt;/V&gt;" rightanswer="1" delimit="" /></root>