Circle diameter = 20 ·

06 Jun 2024, 00:00

Circle diameter = 20 Image to Crop

A circle has diameter = 20

Calculate Area, Circumference, Radius, Diameter

Calculate radius (r):

d = 2r

Rearranging the equation, we get:

r =	d
	2

r =	20
	2

r = 10

Calculate circumference (C):

C = 2πr

C = 2π * 10

C = 20π or 62.8319

Calculate Area (A):

A = πr2

A = π * 102

A = 100π or 314.1593

Final Answers

r = 10
C = 20π or 62.8319
A = 100π or 314.1593

You have 1 free calculations remaining

What is the Answer?

r = 10
C = 20π or 62.8319
A = 100π or 314.1593

How does the Circles Calculator work?

Free Circles Calculator - Calculates and solves for Radius, Diameter, Circumference, and Area of a Circle.
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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

Circle diameter = 20

A circle has diameter = 20 Calculate Area, Circumference, Radius, Diameter d = 2r r = 10 C = 2r C = 2 * 10 C = 20 or 62.8319 A = r2 A = * 102 A = 100 or 314.1593 r = 10C = 20 or 62.8319A = 100 or 314.1593