八面体体积计算程序-yiteyi-C++库

给定八面体的侧面，然后计算八面体的体积。例如：

null

Input : 3Output : 12.7279Input : 7Output : 161.692

推荐：请尝试你的方法 {IDE} 首先，在进入解决方案之前。

正八面体有八个面、十二条边和六个顶点。它有八个等长的三角形和两个在底部相交的方形金字塔。

Octahedron

图片来源：维基媒体

八面体的性质：面数：8 边缘数：12 顶点数：6 体积=√2/3×a ^3. 其中a是八面体的边

CPP

                         // CPP Program to calculate                       
                         // volume of Octahedron                       
                         #include <bits/stdc++.h>                       
                         using                                     namespace                                     std;                       
           
                         // utility Function                       
                         double                                     vol_of_octahedron(                                     double                                     side)                       
                         {                       
                                                 return                                     ((side*side*side)*(                                     sqrt                                     (2)/3));                       
                         }                       
           
                         // Driver Function                       
                         int                                     main()                       
                         {                       
                                                 double                                     side = 3;                       
                                                 cout <<                                     "Volume of octahedron ="                       
                                                 << vol_of_octahedron(side)                       
                                                 << endl;                       
                         }                       

JAVA

                         // Java Program to calculate                       
                         // volume of Octahedron                       
           
                         import                                     java.io.*;                       
                         class                                     GFG                       
                         {                       
                                                 public                                     static                                     void                                     main (String[] args)                       
                                                 {                       
                                                 // Driver Function                       
                                                 double                                     side =                                     3                                     ;                       
                                                 System.out.print(                                     "Volume of octahedron = "                                     );                       
                                                 System.out.println(vol_of_octahedron(side));                       
           
                                                 }                       
           
                                                 // utility Function                       
                                                 static                                     double                                     vol_of_octahedron(                                     double                                     side)                       
                                                 {                       
                                                 return                                     ((side*side*side)*(Math.sqrt(                                     2                                     )/                                     3                                     ));                       
                                                 }                       
                         }                       
           
                         // This code is contributed                       
                         // by Azkia Anam.                       

Python3

                         # Python3 Program to calculate                       
                         # volume of Octahedron                       
           
                         import                                     math                       
           
                         # utility Function                       
                         def                                     vol_of_octahedron(side):                       
                                                 return                                     ((side                                     *                                     side                                     *                                     side)                                     *                                     (math.sqrt(                                     2                                     )                                     /                                     3                                     ))                       
           
                         # Driver Function                       
                         side                                     =                                     3                       
                         print                                     (                                     "Volume of octahedron ="                                     ,                       
                                                 round                                     (vol_of_octahedron(side),                                     4                                     ))                       
           
                         # This code is contributed                       
                         # by Azkia Anam.                       

C#

                         // C# Program to calculate                       
                         // volume of Octahedron                       
                         using                                     System;                       
           
                         class                                     GFG                       
                         {                       
                                                 public                                     static                                     void                                     Main ()                       
                                                 {                       
                                                 // Driver Function                       
                                                 double                                     side = 3;                       
                                                 Console.Write(                                     "Volume of octahedron = "                                     );                       
                                                 Console.WriteLine(vol_of_octahedron(side));                       
           
                                                 }                       
           
                                                 // utility Function                       
                                                 static                                     double                                     vol_of_octahedron(                                     double                                     side)                       
                                                 {                       
                                                 return                                     ((side*side*side)*(Math.Sqrt(2)/3));                       
                                                 }                       
                         }                       
           
                         // This code is contributed                       
                         // by vt_m.                       

PHP

                         <?php                       
                         // PHP Program to calculate                       
                         // volume of Octahedron                       
           
                         // utility Function                       
                         function                                     vol_of_octahedron(                                     $side                                     )                       
                         {                       
                                                 return                                     ((                                     $side                                     *                                     $side                                     *                       
                                                 $side                                     ) * (sqrt(2) / 3));                       
                         }                       
           
                                                 // Driver Function                       
                                                 $side                                     = 3;                       
                                                 echo                                     (                                     "Volume of octahedron ="                                     );                       
                                                 echo                                     (vol_of_octahedron(                                     $side                                     ));                       
                                   
                         // This code is contributed                       
                         // by vt_m.                       
                         ?>                       

Javascript

                         <script>                       
                         // javascript Program to calculate                       
                         // volume of Octahedron                       
           
                         // utility Function                       
                         function                                     vol_of_octahedron( side)                       
                         {                       
                                                 return                                     ((side*side*side)*(Math.sqrt(2)/3));                       
                         }                       
           
                         // Driver Function                       
                                                 let side = 3;                       
                                                 document.write(                                     "Volume of octahedron = "                                     +                       
                                                 vol_of_octahedron(side).toFixed(4));                       
                                   
                                                 // This code is contributed by gauravrajput1                       
                         </script>                       

输出：

 Volume of octahedron = 12.7279

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