- 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
Area of largest Circle inscribe in N-sided Regular polygon in C Program?
Here we will see how to get the area of the circle which is inscribed in N-sided regular polygon. The N (number of sides) are given, and each side of the polygon is ‘a’
The approach is simple. One N sided polygon can be divided into N equal triangles, the whole angle for each triangle in center is 360/N, so −
Example
#include <iostream> #include <cmath> using namespace std; float area(float n, float a) { if (n < 0 || a < 0 ) //if the valuse are negative it is invalid return -1; float r = a/(2.0*tan((180/n) * 3.14159/180)); float area = 3.14159 * r*r; return area; } int main() { float n = 8, a = 4; cout << "Area : " << area(n, a); }
Output
Area : 73.2422
Advertisements