# Circle Calculator

This calculator will find either the equation of the circle from the given parameters or the center, radius, diameter, area, circumference (perimeter), eccentricity, linear eccentricity, x-intercepts, y-intercepts, domain, and range of the entered circle.

To graph a circle, visit the circle graphing calculator (choose the "Implicit" option).

## Answer

**Your input: find the center, area, circumference (perimeter), radius, diameter, x-intercepts, and y-intercepts of the circle $$$x^{2} + y^{2}=9$$$.**

**Graph:** to graph the circle, visit the circle graphing calculator (choose the "Implicit" option).

**Center: $$$\left(0,0\right)$$$.**

**Radius: $$$3$$$.**

**Diameter: $$$6$$$.**

**Circumference: $$$6 \pi\approx 18.8495559215388$$$.**

**Area: $$$9 \pi\approx 28.2743338823081$$$.**

**Eccentricity: $$$0$$$.**

**Linear eccentricity: $$$0$$$.**

**x-intercepts: $$$\left(-3, 0\right),\left(3, 0\right)$$$.**

**y-intercepts: $$$\left(0, -3\right),\left(0, 3\right)$$$.**

**Domain: $$$\left[-3, 3\right]$$$.**

**Range: $$$\left[-3, 3\right]$$$.**