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Ruby program to calculate the volume and area of the Cylinder

Last Updated : December 15, 2025

Problem Solution

In this program, we will read the radius and height of the Cylinder from the user. Then we will calculate the volume and surface area of the Cylinder and print the result.

Program/Source Code

The source code to calculate the volume and area of the Cylinder is given below. The given program is compiled and executed successfully.

# Ruby program to calculate the
# volume and area of Cylinder

radius=0.0;
height=0.0;
volume=0.0;
area  =0.0;

print "Enter radius: ";
radius = gets.chomp.to_f;  

print "Enter height: ";
height = gets.chomp.to_f;  

volume = 3.14 * radius * radius * height;
area   = 2.0 * 3.14 * radius * (radius + height);
    
print "Volume of Cylinder is: ",volume;
print "\nArea of Cylinder is: ",area;

Output

Enter radius: 6
Enter height: 2.34
Volume of Cylinder is: 264.51359999999994
Area of Cylinder is: 314.2512

Explanation

In the above program, we created four variables radius, height, volume, area those are initialized with 0.0. Then we read the radius, height of the Cylinder from the user and calculated the surface area and volume of the Cylinder using the standard formula. After that, we printed the result.

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