Area Calculations

Calculate the area of a circular annulus (crown) by subtracting the inner circle’s area from the outer using the formula π(R² – r²).

Calculate the area of a circular sector using its radius and central angle. A concise, step-by-step guide for quick and accurate geometry calculations.

Learn how to calculate the area of a regular polygon using formulas based on its apothem, side lengths, and perimeter for accurate geometry.

Calculate an ellipse’s area using A = πab. Learn how the semi-major (a) and semi-minor (b) axes determine the overall space enclosed.

Calculate a circle’s area using A = πr². Learn how the radius and pi work together in this simple step-by-step guide to circle geometry.