- Altitude of a triangle
This online calculator computes the length of a altitude of a triangle, given the lengths of edges of a triangle.

- Angle bisector of a triangle
This online calculator computes length of angle bisector given the lengths of triangle edges

- Angular size, linear size and distance
These calculators computes value of angular size or linear size or distance from the other two's

- Area of a convex quadrilateral. Example of creating a calculator.
This online calculator calculates area of a convex quadrilateral given diagonal values and value of angle between them. Article also describes the process of creating a calculator.

- Area of a quadrilateral
This article lists several calculators for area of a quadrilateral

- Area of triangle by coordinates
This calculator determines area of triangle, using its vertex coordinates in cartesian coordinate system

Can calculate area, arc length,chord length, height and perimeter of circular segment by radius and angle.

- Ball radius calculated by volume
- Calculator of area of a triangle using Hero's formula
- Circle formulae
Circle formulae

- Circular sector
Calculates area, arc length, perimeter and center of mass of circular sector

- Circumcircle of a triangle
This online calculator determines the radius and area of the circumcircle of a triangle given the three sides

This calculator will help you estimate hip roof parameters, including rafters and roof area

- Cone
- Cone development
Calculator of right circular cone / truncated right circular cone development

- Counting pipes from the end face
The approach to the calculation of the number of nested circles of smaller radius at a known length of the describing circle of a larger radius. Created by user request

- Cube
- Cylinder
- Cylindrical tank volume
Cylindrical tank volume

- Ellipsoid
Calculates ellipsoid and spheroid volume and surface area.

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