From 6c6d6fed24f475ed7e153f209650fd93ff42fd1d Mon Sep 17 00:00:00 2001
From: Marco Steinke <49523050+MarcoSteinke@users.noreply.github.com>
Date: Thu, 30 Sep 2021 20:06:52 +0200
Subject: [PATCH] Add surfaceAreaCylinder (hacktoberfest) (#2337)

---
 Maths/Area.java | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/Maths/Area.java b/Maths/Area.java
index ea1db120b..6b5e45f27 100644
--- a/Maths/Area.java
+++ b/Maths/Area.java
@@ -28,6 +28,9 @@ public class Area {
 
     /* test circle */
     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) {
     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