Area of a circle = πR2
Where π = 3.14 and R = radius of circle
Example:
Radius = 4.0 Area = π*radius*radius = 3.14*4*4 = 50.24
Code:
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| public class AreaOfCircle { | |
| public static void area(double radius){ | |
| double pi = 3.14; | |
| double area = pi*radius*radius; | |
| System.out.println("Area of circle with radius="+radius + " is: " + area); | |
| } | |
| public static void main(String[] args) { | |
| double radius = 4; | |
| area(radius); | |
| } | |
| } |
Output:
Area of circle with radius=4.0 is: 50.24
Area is calculated incorrectly
double area = 2*pi*radius;
should be
double area = pi * radius * radius
and the Out put should be 50.24 instead of 25.12
Thanks Lipsa. We have modified the code