一个正方形的面积|使用边、对角线和周长

给定正方形的边S 、对角线D或周长P之一，任务是找到具有给定值的正方形面积。

例子：

Input: S = 5 
Output: Area of the square using side = 25

Input: D = 4 
Output: Area of the square using diagonal = 8 
 

Input: P = 32 
Output: Area of the square using perimeter = 64 
 

使用其边查找正方形的面积

边S的正方形面积由下式给出：

Area = Side * Side

下面是上述方法的实现：

C++

// C++ program for the above approach
#include 
using namespace std;
 
// Function to find the area of a square
int areaOfSquare(int S)
{
    // Use above formula
    int area = S * S;
 
    return area;
}
 
// Driver Code
int main()
{
 
    // Given Side of square
    int S = 5;
 
    // Function call
    cout << areaOfSquare(S);
    return 0;
}

Java

// Java program for the above approach
class GFG{
  
// Function to find the area of a square
static int areaOfSquare(int S)
{
    // Use above formula
    int area = S * S;
  
    return area;
}
  
// Driver Code
public static void main(String[] args)
{
  
    // Given Side of square
    int S = 5;
  
    // Function call
    System.out.println(areaOfSquare(S));
}
}
 
// This code is contributed by rock_cool

Python3

# Python3 program for the above approach
 
# Function to find the area of a square
def areaOfSquare(S):
 
    # Use above formula
    area = S * S
 
    return area
 
# Driver Code
if __name__ == '__main__':
 
    # Given Side of square
    S = 5
 
    # Function call
    print(areaOfSquare(S))
 
# This code is contributed by Mohit Kumar

C#

// C# program for the above approach
using System;
class GFG{
   
// Function to find the area of a square
static int areaOfSquare(int S)
{
    // Use above formula
    int area = S * S;
   
    return area;
}
   
// Driver Code
public static void Main(string[] args)
{
   
    // Given Side of square
    int S = 5;
   
    // Function call
    Console.Write(areaOfSquare(S));
}
}
 
// This code is contributed by Ritik Bansal

Javascript

 
    // Javascript program for the above approach
     
    // Function to find the area of a square
    function areaOfSquare(S)
    {
        // Use above formula
        let area = S * S;
 
        return area;
    }
 
    // Given Side of square
    let S = 5;
  
    // Function call
    document.write(areaOfSquare(S));
     
    // This code is contributed by divyeshrabadiya07.
     

输出：

25

使用对角线求正方形的面积

• 给定边S的正方形面积由下式给出：

Area = S * S      …(1)

• S边和对角D之间的关系由下式给出：

$D = \sqrt{2}*S$
 

   …(2) 
 

 

• 将方程（2）中的 S 值代入方程（1），我们有：

$Area = (\frac{D}{\sqrt{2}})^{2} = \frac{D*D}{2}$

下面是上述方法的实现：

C++

// C++ program for the above approach
#include 
using namespace std;
 
// Function to find the area of a square
int areaOfSquare(int D)
{
    // Use above formula
    int area = (D * D) / 2;
 
    return area;
}
 
// Driver Code
int main()
{
 
    // Given diagonal of square
    int D = 4;
 
    // Function call
    cout << areaOfSquare(D);
    return 0;
}

Java

// Java program for the above approach
import java.util.*;
 
class GFG{
 
// Function to find the area of a square
static int areaOfSquare(int D)
{
     
    // Use above formula
    int area = (D * D) / 2;
 
    return area;
}
 
// Driver Code
public static void main(String[] args)
{
     
    // Given diagonal of square
    int D = 4;
 
    // Function call
    System.out.print(areaOfSquare(D));
}
}
 
// This code is contributed by PrinciRaj1992

蟒蛇3

# Python3 program for the above approach
 
# Function to find the area of a square
def areaOfSquare(D):
 
    # Use above formula
    area = (D * D) // 2;
 
    return area;
 
# Driver Code
if __name__ == '__main__':
 
    # Given diagonal of square
    D = 4;
    # Function call
    print(areaOfSquare(D));
 
# This code is contributed by PrinciRaj1992

C＃

// C# program for the above approach
using System;
 
class GFG{
 
// Function to find the area of a square
static int areaOfSquare(int D)
{
     
    // Use above formula
    int area = (D * D) / 2;
 
    return area;
}
 
// Driver Code
public static void Main(String[] args)
{
     
    // Given diagonal of square
    int D = 4;
 
    // Function call
    Console.Write(areaOfSquare(D));
}
}
 
// This code is contributed by amal kumar choubey

Javascript

    // Javascript program for the above approach
     
    // Function to find the area of a square
    function areaOfSquare(D)
    {
        // Use above formula
           let area = parseInt((D * D) / 2, 10);
 
        return area;
    }
     
    // Given diagonal of square
    let D = 4;
  
    // Function call
    document.write(areaOfSquare(D));
     

输出：

8

使用其周长查找正方形的面积

• 给定边S的正方形面积由下式给出：

Area = S * S      …(1)

• 边S和周长P之间的关系由下式给出：

P =4*S      …(2)

• 将方程（2）中的 S 值代入方程（1），我们有：

$Area = (\frac{P}{4})^{2} = \frac{P*P}{4}$

下面是上述公式的实现：

C++

// C++ program for the above approach
#include 
using namespace std;
 
// Function to find the area of a square
int areaOfSquare(int P)
{
    // Use above formula
    int area = (P * P) / 16;
 
    return area;
}
 
// Driver Code
int main()
{
    // Given perimeter of square
    int P = 32;
 
    // Function call
    cout << areaOfSquare(P);
    return 0;
}

Java

// Java program for the above approach
class GFG{
 
// Function to find the area of a square
static int areaOfSquare(int P)
{
     
    // Use above formula
    int area = (P * P) / 16;
 
    return area;
}
 
// Driver Code
public static void main(String[] args)
{
     
    // Given perimeter of square
    int P = 32;
 
    // Function call
    System.out.print(areaOfSquare(P));
}
}
 
// This code is contributed by amal kumar choubey

蟒蛇3

# Python3 program for the above approach
 
# Function to find the area of a square
def areaOfSquare(P):
   
    # Use above formula
    area = (P * P) // 16;
 
    return area;
 
# Driver Code
if __name__ == '__main__':
   
    # Given perimeter of square
    P = 32;
 
    # Function call
    print(areaOfSquare(P));
 
# This code is contributed by gauravrajput1

C＃

// C# program for the above approach
using System;
 
class GFG{
 
// Function to find the area of a square
static int areaOfSquare(int P)
{
     
    // Use above formula
    int area = (P * P) / 16;
 
    return area;
}
 
// Driver Code
public static void Main(String[] args)
{
     
    // Given perimeter of square
    int P = 32;
 
    // Function call
    Console.Write(areaOfSquare(P));
}
}
 
// This code is contributed by amal kumar choubey

Javascript

 
// javascript program for the above approach
// Function to find the area of a square
function areaOfSquare(P)
{
     
    // Use above formula
    var area = (P * P) / 16;
 
    return area;
}
 
// Driver Code
//Given perimeter of square
var P = 32;
 
// Function call
document.write(areaOfSquare(P));
 
// This code is contributed by Princi Singh

输出：

64