Circle Calculator

Circle Measurements

A circle is described by its radius, diameter, circumference, and area.

Formulas: diameter = 2r, circumference = 2 x pi x r, area = pi x r^2.

Understanding Circle Measurements

1. What This Calculator Measures

A circle is a flat round shape where every point on the boundary is the same distance from the center.

2. How the Calculation Works

The calculator uses radius to find diameter, circumference, and area.

3. Formula or Rule Used

area = pi x r^2; circumference = 2 x pi x r.

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