window.onload=function(){
var oText1=document.getElementById("ls");
var oText2=document.getElementById("dn");
var oText3=document.getElementById("ll");
var oBtn=document.getElementById("btn1");
var js;
oBtn.onclick=function(){
if(oText1.value==""&&oText1.value==""){
return false;
}else{
js=parseFloat(oText1.value)*parseFloat(oText2.value)*parseFloat(oText2.value)*3.1415*0.001*0.25*3.6;
oText3.value=Math.round(js*1000)/1000;
}
}
}
Flow velocity M / s < br / >


Caliber: 24681015202532405065801001251502002503003504004505006007008009001000120014001600160018002000 < br / >


Discharge m3 / h < br / >




Calculator for windows