计算四面体面积和体积的程序
原文:https://www.geeksforgeeks.org/calculate-area-tetrahedron/
四面体只是一个底部为三角形的金字塔。它是一个实心对象，有四个三角形面，三个在侧面或侧面，一个在底部或底部，四个顶点或角。如果面都是全等的等边三角形，那么四面体就叫做正四面体。
四面体的面积可以通过以下公式计算:
Area = sqrt(3)*(side*side)
示例:
Input : side = 3
Output : 15.5885
Input : side = 20
Output : 692.82
C++
// C++ Program to Calculate
// area of tetrahedron
#include<iostream>
#include<math.h>
using namespace std;
//Utility Function
double area_of_tetrahedron(int side)
{
return (sqrt(3)*(side*side));
}
//Driver Code
int main()
{
int side=3;
cout<< "Area of Tetrahedron ="
<< area_of_tetrahedron(side);
}
// This code is contributed by anant321.
Java 语言(一种计算机语言，尤用于创建网站)
// Java Program to Calculate
// area of tetrahedron
import java.util.*;
import java.lang.*;
class GFG {
// Utility Function
public static double area_of_tetrahedron(int side)
{
return (Math.sqrt(3) * (side * side));
}
// Driver code
public static void main(String[] args)
{
int side = 3;
System.out.println("Area of Tetrahedron ="
+ area_of_tetrahedron(side));
}
}
// This code is contributed
// by Prasad Kshirsagar
Python 3
# Python3 Program to
# Calculate area of
# tetrahedron
import math
def area_of_tetrahedron(side):
return (math.sqrt(3) *
(side * side));
# Driver Code
side = 3;
print("Area of Tetrahedron = ",
round(area_of_tetrahedron(side), 4));
# This code is contributed by mits
C
// C# Program to Calculate
// area of tetrahedron
using System;
class GFG
{
// Utility Function
public static double area_of_tetrahedron(int side)
{
return (Math.Sqrt(3) *
(side * side));
}
// Driver code
static public void Main ()
{
int side = 3;
Console.WriteLine("Area of Tetrahedron = " +
area_of_tetrahedron(side));
}
}
// This code is contributed
// by akt_mit
服务器端编程语言（Professional Hypertext Preprocessor 的缩写）
<?php
// PHP Program to Calculate
// area of tetrahedron
function area_of_tetrahedron($side)
{
return (sqrt(3) * ($side * $side));
}
// Driver Code
$side = 3;
echo "Area of Tetrahedron = ",
area_of_tetrahedron($side);
// This code is contributed by aj_36.
?>
java 描述语言
<script>
// javascript Program to Calculate
// area of tetrahedron
// Utility Function
function area_of_tetrahedron( side)
{
return (Math.sqrt(3) * (side * side));
}
// Driver Code
let side = 3;
document.write("Area of Tetrahedron ="
+ area_of_tetrahedron(side).toFixed(4));
// This code contributed by aashish1995
</script
输出:
Area of Tetrahedron =15.5885
四面体的体积可以通过以下公式求出:
体积= a 3 /(6√2)
示例:
Input : side = 3
Output : 3.18
Input : side = 20
Output : 942.81
C++
// C++ code to find the volume of a tetrahedron
#include <bits/stdc++.h>
using namespace std;
// Function to calculate volume
double vol_tetra(int side)
{
double volume = (pow(side, 3) /
(6 * sqrt(2)));
return volume;
}
// Driver code
int main()
{
int side = 3;
double vol = vol_tetra(side);
vol = (double)round(vol * 100) / 100;
cout << vol;
return 0;
}
// This code is contributed by suresh07
Java 语言(一种计算机语言，尤用于创建网站)
// Java code to find the volume of a tetrahedron
import java.io.*;
class Tetrahedron {
// Function to calculate volume
static double vol_tetra(int side)
{
double volume = (Math.pow(side, 3) / (6 * Math.sqrt(2)));
return volume;
}
// Driver Code
public static void main(String[] args)
{
int side = 3;
double vol = vol_tetra(side);
vol = (double)Math.round(vol * 100) / 100;
System.out.println(vol);
}
}
Python 3
# Python code to find the volume of a tetrahedron
import math
def vol_tetra(side):
volume = (side ** 3 / (6 * math.sqrt(2)))
return round(volume, 2)
# Driver Code
side = 3
vol = vol_tetra(side)
print(vol)
C
// C# code to find the volume of a tetrahedron
using System;
class Tetrahedron {
// Function to calculate volume
static double vol_tetra(int side)
{
double volume = (Math.Pow(side, 3) / (6 * Math.Sqrt(2)));
return volume;
}
// Driver Code
public static void Main()
{
int side = 3;
double vol = vol_tetra(side);
vol = (double)Math.Round(vol * 100) / 100;
Console.WriteLine(vol);
}
}
// This code is contributed
// by vt_m.
服务器端编程语言（Professional Hypertext Preprocessor 的缩写）
<?php
// PHP program to find the
// volume of a tetrahedron
// Function to calculate volume
function vol_tetra($side)
{
$volume = (pow($side, 3) /
(6 * sqrt(2)));
return $volume;
}
// Driver Code
$side = 3;
$vol = vol_tetra($side);
echo $vol;
// This code is contributed by ajit
?>
java 描述语言
<script>
// javascript code to find the volume of a tetrahedron
function vol_tetra(side)
{
let volume = (Math.pow(side, 3) / (6 * Math.sqrt(2)));
return volume;
}
// Driver Code
let side = 3;
let vol = vol_tetra(side);
vol = Math.round(vol * 100) / 100;
document.write(vol);
// This code is contributed by gauravrajput1
</script>
输出:
3.18
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