<!--Copyright © 1999-2000 the12volt.com -->
<!--If you use this script, you must include this copyright notice -->
<!-- 
function volt(number,X) {
// rounds number to X decimal places, defaults to 2
X = (!X ? 5 : X);
return Math.round(number*Math.pow(10,X))/Math.pow(10,X);
}
function computev3(obj) {
with (Math) {
d=eval(obj.diam.value);
h=eval(obj.high3.value);
t=eval(obj.thick3.value);
r =  d/2
obj.vol3.value =volt((((r-t)*(r-t)*3.1415929)*(h-(t*2)))/1728);
}	
}
//-->