Issue #5479 : added volume of Frustum Cone function in src/main/java/com/thealgorithms/maths/Volume.java and assert function for the same in src/test/java/com/thealgorithms/maths/Volume.java

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

@@ -72,7 +72,7 @@ public static double volumeCone(double radius, double height) {
     /**
      * Calculate the volume of a prism.
      *
-     * @param baseArea  area of the given prism's base
+     * @param baseArea area of the given prism's base
      * @param height of given prism
      * @return volume of given prism
      */
@@ -83,11 +83,23 @@ public static double volumePrism(double baseArea, double height) {
     /**
      * Calculate the volume of a pyramid.
      *
-     * @param baseArea   of the given pyramid's base
+     * @param baseArea of the given pyramid's base
      * @param height of given pyramid
      * @return volume of given pyramid
      */
     public static double volumePyramid(double baseArea, double height) {
         return (baseArea * height) / 3;
     }
+
+    /**
+     * Calculate the volume of a pyramid.
+     *
+     * @param r1 radius of top of frustum
+     * @param r2 radius of bottom of frustum
+     * @param height of given frustum
+     * @return volume of given frustum
+     */
+    public static double volumeFurstumOfCone(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

@@ -32,5 +32,8 @@ public void volume() {
 
         /* test pyramid */
         assertTrue(Volume.volumePyramid(10, 3) == 10.0);
+
+        /* test frustum */
+        assertTrue(Volume.volumeFurstumOfCone(3, 5, 7) == 359.188760060433);
     }
 }