Here we will see how to get the area of one hexagon using diagonal length. The diagonal length of the hexagon is d.
The interior angles of a regular hexagon are 120° each. The sum of all interior angles are 720°. If the diagonal is d, then area is −
Example
#include <iostream> #include <cmath> using namespace std; float area(float d) { if (d < 0) //if d is negative it is invalid return -1; float area = (3 * sqrt(3) * d*d)/8.0; return area; } int main() { float r = 10; cout << "Area : " << area(r); }
Output
Area : 64.9519