Circle radius = 20

Circle radius = 20

A circle has radius = 20

Calculate Area, Circumference, Radius, Diameter

Calculate circumference (C):

C = 2πr

C = 2π * 20

C = 40π or 125.6637

Calculate diameter (d):

d = 2r

d = 2 * 20

d = 40

Calculate Area (A):

A = πr2

A = π * 202

A = 400π or 1256.6371

Final Answers

C = 40π or 125.6637
d = 40
A = 400π or 1256.6371

You have 1 free calculations remaining

What is the Answer?

C = 40π or 125.6637
d = 40
A = 400π or 1256.6371

How does the Circles Calculator work?

Free Circles Calculator - Calculates and solves for Radius, Diameter, Circumference, and Area of a Circle.
This calculator has 1 input.

What 3 formulas are used for the Circles Calculator?

What 7 concepts are covered in the Circles Calculator?

areaNumber of square units covering the shapecirclethe set of all points in the plane that are a fixed distance from a fixed pointcirclescircumferencethe perimeter of a circle or ellipsdiameterdistance from two endpoints of a circle through the center
d = 2roriginOn a two digit coordinate plane, the point (0, 0), where the x-axis and y-axis cross.radiusDistance from the center of a circle to the edge
C/2π

Example calculations for the Circles Calculator

Circles Calculator Video

Tags:

Add This Calculator To Your Website

ncG1vNJzZmivp6x7rq3ToZqepJWXv6rA2GeaqKVfqLKivsKhZamgoHS%2Bfo%2FIq5qlnVVnfbOtw6KsrF1iZXJ0kIRrZ2to