circunferencia

<applet name="ggbApplet" code="geogebra.GeoGebraApplet" archive="geogebra.jar"
 codebase="http://www.geogebra.org/webstart/4.0/"
 width="1280" height="633">
 <param name="ggbBase64" value="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" />
 <param name="image" value="http://www.geogebra.org/webstart/loading.gif" />
 <param name="boxborder" value="false" />
 <param name="centerimage" value="true" />
 <param name="java_arguments" value="-Xmx512m -Djnlp.packEnabled=true" />
 <param name="cache_archive" value="geogebra.jar, geogebra_main.jar, geogebra_gui.jar, geogebra_cas.jar, geogebra_algos.jar, geogebra_export.jar, geogebra_javascript.jar, jlatexmath.jar, jlm_greek.jar, jlm_cyrillic.jar, geogebra_properties.jar" />
 <param name="cache_version" value="4.0.34.0, 4.0.34.0, 4.0.34.0, 4.0.34.0, 4.0.34.0, 4.0.34.0, 4.0.34.0, 4.0.34.0, 4.0.34.0, 4.0.34.0, 4.0.34.0" />
 <param name="showResetIcon" value="false" />
 <param name="enableRightClick" value="true" />
 <param name="errorDialogsActive" value="true" />
 <param name="enableLabelDrags" value="false" />
 <param name="showMenuBar" value="false" />
 <param name="showToolBar" value="false" />
 <param name="showToolBarHelp" value="false" />
 <param name="showAlgebraInput" value="false" />
 <param name="useBrowserForJS" value="true" />
 <param name="allowRescaling" value="true" />
 
</applet>