Add Function volumeFrustumOfCone To Calculate Frustum Of Cone Then Test It.

Author: ahmedelazab1220

src/main/java/com/thealgorithms/maths/Volume.java

@@ -99,7 +99,7 @@ public static double volumePyramid(double baseArea, double height) {
      * @param height height of the frustum
      * @return volume of the frustum
      */
-    public static double volumeFrustum(double r1, double r2, double height) {
+    public static double volumeFrustumOfCone(double r1, double r2, double height) {
         return (Math.PI * height / 3) * (r1 * r1 + r2 * r2 + r1 * r2);
     }
 

src/test/java/com/thealgorithms/maths/VolumeTest.java

@@ -34,7 +34,7 @@ public void volume() {
         assertTrue(Volume.volumePyramid(10, 3) == 10.0);
 
         /* test frustum */
-        assertTrue(Volume.volumeFrustum(3, 5, 7) == 359.188760060433);
+        assertTrue(Volume.volumeFrustumOfCone(3, 5, 7) == 359.188760060433);
 
     }
-}
+}