Circle Equation Generator: Standard & General FormBy Daniel Sir / September 13, 2026 Circle Equations & Properties Standard form: (x-h)² + (y-k)² = r² Center (h, k): Radius r:Generate Equation Equations Standard Form: General Form: x² + y² + Dx + Ey + F = 0 Circumference: 2πr = Area: πr² =