A Rectangle is a quadrilateral with four right angles (90°). In a rectangle, the opposite sides are equal. A rectangle with all four sides equal is called a Square. A rectangle can also be called as right angled parallelogram.
In the above rectangle, the sides A and C are equal and B and D are equal.
The perimeter of a rectangle is the total length of all its four sides. It can be simply calculated by all its four sides.
Perimeter of rectangle ABCD = A+B+C+D
Since the opposite sides are equal in a rectangle, it can be calculated as the sum of twice of one of its side and twice of its adjacent side.
Perimeter of rectangle ABCD = 2A + 2B = 2(A+B)
Program
// Java program to find the perimeter of a Rectangle import java.io.*;
class GFG {
// Method to calculate the perimeter of the rectangle
// with given length and breadth
static void perimeter( int length, int breadth)
{
// Calculate the 'perimeter' using the formula
int perimeter = 2 * (length + breadth);
System.out.println( "The perimeter of the given rectangle of length "
+ length + " and breadth " + breadth + " = "
+ perimeter);
}
// Driver method
public static void main(String[] args)
{
// Initialize a variable length that stores length of
// the given rectangle
int length = 10 ;
// Initialize a variable breadth that stores breadth
// of the given rectangle
int breadth = 20 ;
// Call the perimeter method on these length and
// breadth
perimeter(length, breadth);
}
} |
The perimeter of the given rectangle of length 10 and breadth 20 = 60
Time complexity: O(1)
Auxiliary space: O(1)