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Heron's formula calculator This calculator calculates the area of a triangle using Heron's formula. This formula gives the area of a triangle from the lengths of all three sides. The formula can be found below the calculator. |

Median of a triangle This online calculator computes the median of a triangle given triangle sides |

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

Altitude of a triangle This online calculator computes the altitude length of a triangle, given the lengths of sides of a triangle. |

Converting degrees to radians and vice versa Converts degrees, minutes and seconds to radians and radians to degrees, minutes and seconds |

Side length of the regular polygon Calculates the side length of the regular polygon circumscribed or inscribed to a circle. Created by user's request |

Volume of geometric shapes Calculates volume of geometric shapes: cube, prism, pyramid, frustum, cone, cylinder, sphere, ellipsoid. |

Cartesian and polar two-dimensional coordinate systems This online calculator converts polar coordinates to cartesian coordinates and vice versa. |

Surface area of a cube |

Cube |

Sphere |

Cone |

Cylinder |

Ellipsoid Calculates ellipsoid and spheroid volume and surface area. |

Solving a system of equations of first degree with two unknowns This calculator solves a system of equations of first degree with two unknowns. |

Solution of a system of 3 linear equations Solution of a system of 3 linear equations with 3 variables |

Determinant of 3x3 matrices This calculator calculates the determinant of 3x3 matrices |

The solution of a quadratic equation The solution of quadratic equation, including complex roots |

Stirling's approximation of factorial Online calculator computes Stirling's approximation of factorial of given positive integer (up to 170!) |

Torus Volume and surface area of torus. |