Calculate rhombus area using diagonals, side with height, or side with angle. Step-by-step solutions with perimeter. Free geometry calculator.
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Calculate sector area using radius and angle (degrees or radians). Step-by-step solutions with arc length. Free tool with pizza slice examples.
Calculate circle area instantly using radius, diameter, or circumference. Step-by-step solutions with π formulas. Free tool with real-world examples.
Free perimeter calculator for all shapes. Calculate perimeter of rectangles, squares, triangles, circles, polygons & more. Step-by-step formulas with unit conversion.
Free triangle area calculator. Calculate area using base×height, Heron's formula, SAS, coordinates, or 3 sides. Step-by-step solutions for all triangle types.
Free sphere surface area calculator. Calculate surface area of spheres using radius, diameter, circumference, or volume. Step-by-step 4πr² formula with hemisphere options.
Free cube surface area calculator. Calculate surface area of cubes using side length, diagonal, or volume. Step-by-step formula 6a² with all 6 faces breakdown.
Free cylinder surface area calculator. Calculate total and lateral surface area of cylinders with step-by-step formulas. Includes volume, circumference, and unit conversions.
Free rectangular prism surface area calculator. Calculate surface area of boxes and cuboids with step-by-step formulas. Includes lateral area, volume, diagonal, and unit conversions.
Free triangular pyramid surface area calculator. Calculate surface area of regular and irregular tetrahedrons. Step-by-step formulas for base area, lateral area, and slant height.