Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Swift Program to Find the Perimeter of a Circle
This tutorial will discuss how to write a Swift program to find the perimeter of the circle.
Perimeter of the circle is also known as the circumference of the circle. It is used to calculate the boundary of the circle. Suppose we want to fence our circular garden so with the help of perimeter we can calculate the total amount of fence required to cover the boundary of the garden. We can calculate the perimeter of the circle with the help of the radius or diameter, here,
Radius − It is known as the distance from the center to a point on the edge of the circle and generally represented by r or R. Or we can say that radius is half of diameter that is r = D/2.
Diameter − It is known as a line that passes through the centre of the circle and its endpoint is present on the edge of the circle and generally represented by the word d or D. Or we can say that diameter is double of radius that is D = 2r.
Formula
Following is the perimeter or circumference of the circle −
Perimeter = 2 * Pi * r
Following is the perimeter or circumference of the circle in terms of diameter −
Perimeter = 2 * Pi * D
Algorithm to Perimeter using Radius of the circle
Step 1 − Define Radius
Step 2 − Enter the value of Pi
Step 3 − Enter the formula − 2πr
Step 4 − Print the output
Example
Perimeter using radius of the circle
The following program shows how to calculate the perimeter of the circle with the help of the radius.
import Foundation
import Glibc
var radius = 10.0
let pi = 3.14
var perimeterOfCircle = 2 * pi * radius
print("Radius of the circle is:", radius)
print("So the perimeter is:", perimeterOfCircle)Output
Radius of the circle is: 10.0 So the perimeter is: 62.800000000000004
In the above code, we calculate the perimeter of the circle with the help of radius of the circle using the following code −
var perimeterOfCircle = 2 * pi * radius
Here the radius of the circle is 10.0. So the perimeter of the circle is 62.800000000000004.
Algorithm to Perimeter using Diameter of the circle
Step 1 − Define Diameter
Step 2 − Enter the value of Pi
Step 3 − Enter the formula − πd
Step 4 − Print the output
Example
Perimeter using diameter of the circle
The following program shows how to calculate the perimeter of the circle with the help of the diameter.
import Foundation
import Glibc
var diameter = 5.0
let pi = 3.14
var perimeterOfCircle = pi * diameter
print("Diameter of the circle is:", diameter)
print("So the perimeter is:", perimeterOfCircle)Output
Diameter of the circle is: 5.0 So the perimeter is: 15.700000000000001
In the above code, we calculate the perimeter of the circle with the help of the diameter using the following code −
var perimeterOfCircle = pi * diameter
Here the diameter of the circle is 5.0. So the perimeter of the circle is 15.7.
2K+ Views
