求立方体的对角线

原文:https://www . geeksforgeeks . org/find-the-the-对角线的立方体/

给定立方体的一面一面。任务是找出立方体对角线的长度。

例:

输入: a = 3 输出: 5.19615 输入: a = 6 输出: 10.3923

公式:

立方体对角线长度= sqrt(3) *边

证明:

使用勾股定理， 在三角形 CED 中， CE²= CD²+DE²T8】l²= a²+a²—>(1) 在三角形 CFE 中， CF²= CE²+EF² L²= L²+a²T30】使用公式(1)中的 l ² 值， L²= a²+a²

C++

// CPP program to find length
// of the diagonal of the cube
#include <bits/stdc++.h>
using namespace std;

// Function to find length
// of diagonal of cube
float diagonal_length(float a)
{
    float L;

    // Formula to Find length
    // of diagonal of cube
    L = a * sqrt(3);

    return L;
}

// Driver code
int main()
{

    float a = 5;

    // Function call
    cout << diagonal_length(a);

    return 0;
}

Java 语言(一种计算机语言，尤用于创建网站)

// Java program to find length
// of the diagonal of the cube
class GFG
{

    // Function to find length
    // of diagonal of cube
    static float diagonal_length(float a)
    {
        float L;

        // Formula to Find length
        // of diagonal of cube
        L = a * (float)Math.sqrt(3);

        return L;
    }

    // Driver Code
    public static void main (String[] args)
    {
        float a = 5;

        // Function call
        System.out.println(diagonal_length(a));
    }
}

// This code is contributed by
// sanjeev2552

Python 3

# Python3 program to find length
# of the diagonal of the cube
from math import sqrt

# Function to find length
# of diagonal of cube
def diagonal_length(a):
    L = 0

    # Formula to Find length
    # of diagonal of cube
    L = a * sqrt(3)

    return L

# Driver code
a = 5

# Function call
print(diagonal_length(a))

# This code is contributed by Mohit Kumar

C

// C# program to find length
// of the diagonal of the cube
using System;
class GFG
{
// Function to find length
// of diagonal of cube
static float diagonal_length(float a)
{
    float L;

    // Formula to Find length
    // of diagonal of cube
    L = a * (float)Math.Sqrt(3);

    return L;
}

// Driver code
public static void Main()
{
    float a = 5;

    // Function call
    Console.Write(diagonal_length(a));
}
}

// This code is contributed by Nidhi

服务器端编程语言（Professional Hypertext Preprocessor 的缩写）

<?php
// PHP program to find length
// of the diagonal of the cube

// Function to find length
// of diagonal of cube
function diagonal_length($a)
{
    $L;

    // Formula to Find length
    // of diagonal of cube
    $L = $a * sqrt(3);

    return $L;
}

// Driver code
$a = 5;

// Function call
echo diagonal_length($a);

// This code is contributed
// by Naman_Garg.
?>

java 描述语言

<script>
// javascript program to find length
// of the diagonal of the cube

// Function to find length
// of diagonal of cube
function diagonal_length( a)
{
    let L;

    // Formula to Find length
    // of diagonal of cube
    L = a * Math.sqrt(3);

    return L;
}

// Driver code
    let a = 5;

    // Function call
    document.write(diagonal_length(a).toFixed(5));

// This code is contributed by gauravrajput1
</script>

Output: 

8.66025

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