Java Program to Find Volume and Surface Area of Cone

This is the Java Program to Find the Surface Area and Volume of a Cone.

Problem Description

Given the dimensions of a cone, find out its surface area and volume.

Problem Solution

The surface area and volume of a cone can be calculated using the formulas:

Surface Area = (PI * radius * slant height) + (PI * radius²).
Volume = PI * radius² * height/3.

Program/Source Code

Here is the source code of the Java Program to Find the Surface Area and Volume of a Cone. The program is successfully compiled and tested using IDE IntelliJ Idea in Windows 7. The program output is also shown below.

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//Java Program to Find the Surface Area and Volume of a Cone

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import java.io.BufferedReader;
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import java.io.InputStreamReader;
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public class Cone {
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    // Function to calculate and print the surface area and volume of a cone

    public static void main(String[] args) {

        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

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        double radius,height;
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        System.out.println("Enter the radius and

                            height of the right circular cone");

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        try{
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            radius=Double.parseDouble(br.readLine());

            height=Double.parseDouble(br.readLine());

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        }catch (Exception e){
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            System.out.println("An error occurred");

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            return;
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        }
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        if(radius<=0 || height<=0){
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            System.out.println("Wrong Input");

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            return;
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        }
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        double slantheight = Math.sqrt(Math.pow(radius,2) + Math.pow(height,2));

        System.out.println("Volume = " + (Math.PI*Math.pow(radius,2)*height/3));

        System.out.println("Surface area = " + ((Math.PI*radius*slantheight)

                                                 + (Math.PI*radius*radius)));

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    }
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}
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Program Explanation

1. In function main(), first, the radius and the height of the cone are taken as input.
2. The condition if(radius<=0 || height<=0) checks if the input is valid or not.
3. The print statement displays the surface area and volume of the cone.

Time Complexity: O(1)

Runtime Test Cases

 
Case 1 (Simple Test Case):
 
Enter the radius and height of the right circular cone
3.42
12
Volume = 146.98129725379061
Surface area = 170.81027853689216

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