# Rectangle Calculator

## Definition

Rectangle - a geometrical figure, any four sided figure with only right angles. It consists of 2 pairs of parallel sides. The name comes from Latin rectangulus, that was created by combining rectus (meaning right) and angulus (meaning angle).

Equation form:

d = √(a² +b²) |

Perimeter = 2 * a + 2 * b |

Area enclosed (A) = a*b |

_{C}) of circumscribed circle about rectangle with side a,b:

A_{C} = | π * (a²+b²) |

4 |

### About Rectangle Calculator tool.

Remember this tool should be used only to calculate area, perimeter or volume of a figure. The results we provide are accurate, but rounded to the 12th decimal place. It accepts scientific notation and converts immediately.