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Add surfaceAreaCylinder (hacktoberfest) (#2337)

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This commit is contained in:
Marco Steinke
2021-09-30 20:06:52 +02:00
committed by GitHub
parent d127a361b0
commit 6c6d6fed24
1 changed files with 13 additions and 0 deletions
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13
Maths/Area.java
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@ -28,6 +28,9 @@ public class Area {
/* test circle */ /* test circle */
assert Double.compare(surfaceAreaCircle(20), 1256.6370614359173) == 0; assert Double.compare(surfaceAreaCircle(20), 1256.6370614359173) == 0;
/* test cylinder */
assert Double.compare(surfaceAreaCylinder(1,2), 18.84955592153876) == 0;
} }
/** /**
@ -60,6 +63,16 @@ public class Area {
private static double surfaceAreaRectangle(double length, double width) { private static double surfaceAreaRectangle(double length, double width) {
return length * width; return length * width;
} }
/**
* Calculate surface of a cylinder
*
* @param radius radius of the floor
* @param height height of the cylinder.
*/
private static double surfaceAreaCylinder(double radius, double height) {
return 2 * (Math.PI * radius * radius + Math.PI * radius * height);
}
/** /**
* Calculate the area of a square * Calculate the area of a square