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Formulas/maths/Mensuration (Areas and Volumes)

Mensuration (Areas and Volumes)

Circumference of a Circle
Gives the perimeter or boundary length of a circle of radius r.
Area of a Circle
Gives the total area enclosed by a circle of radius r.
Area of a Semicircle
Gives the area of a semicircle of radius r.
Arc Length of a Sector
Gives the length of an arc subtending angle theta at the centre of a circle of radius r.
Area of a Sector
Gives the area of a circular sector of radius r with central angle theta.
Perimeter of a Sector
Gives the total perimeter of a circular sector bounding two radii and the arc.
Area of a Segment of a Circle
Gives the area of a minor segment subtended by angle theta at the centre of radius r.
Length of a Chord
Gives the length of a chord subtending central angle theta in a circle of radius r.
Area of Triangle Given Two Sides and Angle
Gives the area of a triangle given two adjacent sides and their included angle.
Area of an Equilateral Triangle
Gives the area of an equilateral triangle with side length a.
Volume of a Cuboid
Gives the volume of a rectangular cuboid with length l, breadth b, and height h.
Total Surface Area of a Cuboid
Gives the total surface area of all six faces of a cuboid.
Volume of a Cube
Gives the volume of a cube with edge length a.
Total Surface Area of a Cube
Gives the total surface area of a cube of edge length a.
Curved Surface Area of a Cylinder
Gives the lateral curved surface area of a right circular cylinder of radius r and height h.
Total Surface Area of a Cylinder
Gives the total surface area of a solid right circular cylinder.
Volume of a Cylinder
Gives the volume enclosed by a right circular cylinder of radius r and height h.
Volume of a Hollow Cylinder
Gives the volume of material in a hollow circular cylinder with outer radius R and inner radius r.
Slant Height of a Cone
Relates the slant height l of a right circular cone to its base radius r and vertical height h.
Curved Surface Area of a Cone
Gives the curved surface area of a right circular cone of radius r and slant height l.
Total Surface Area of a Cone
Gives the sum of the curved surface area and circular base area of a cone.
Volume of a Cone
Gives the volume of a right circular cone of base radius r and height h.
Surface Area of a Sphere
Gives the surface area of a sphere of radius r.
Volume of a Sphere
Gives the volume enclosed by a sphere of radius r.
Curved Surface Area of a Hemisphere
Gives the curved surface area of a hemisphere of radius r.
Total Surface Area of a Hemisphere
Gives the total surface area of a solid hemisphere including its flat circular base.
Volume of a Hemisphere
Gives the volume of a hemisphere of radius r.
Slant Height of a Frustum of a Cone
Gives the slant height of a conical frustum with base radii R and r and vertical height h.
Curved Surface Area of a Frustum
Gives the curved lateral surface area of a conical frustum with radii R, r and slant height l.
Volume of a Frustum of a Cone
Gives the volume of a right circular conical frustum of height h and base radii R, r.