ปริมาตรรูปทรงปริซึมสี่เหลี่ยมมุมฉาก

This is a Java Applet created using GeoGebra from www.geogebra.org - it looks like you don't have Java installed, please go to www.java.com

krupongsak, 12 February 2013, Created with GeoGebra