Geometry

Calculate the area, circumference and diameter of a circle from its radius.

Calculate the volume, slant height and surface area of a right circular cone from its radius and height.

Calculate the volume, surface area and space diagonal of a cube from a single edge length using exact formulas.

Calculate the volume and surface area of a cylinder from its radius and height using exact formulas with π.

Calculate the area and approximate perimeter of an ellipse from its semi-major and semi-minor axes using Ramanujan’s formula.

Calculate the area and perimeter of a parallelogram from its base, perpendicular height and side length.

Calculate the volume, slant height and surface area of a square pyramid from its base edge and height.

Calculate the area, perimeter and diagonal of a rectangle instantly from its length and width with exact formulas.

Calculate the area, side length and perimeter of a rhombus from its two diagonals using exact geometric formulas.

Calculate the volume, surface area and diameter of a sphere from its radius using exact formulas with π.

Calculate the area, perimeter and diagonal of a square from a single side length using exact geometric formulas.

Calculate the area of a trapezoid from its two parallel sides and the perpendicular height between them.

Find the area of a triangle from its base and height, or from three side lengths using Heron’s formula, plus the perimeter.