of a circle is
I want to calculate
Area
Circumference
Radius
Diameter
All
  

Answer
Success!
r = 3.1830988618379
d = 6.3661977236758
A = 10.1321π or 31.8309

↓Steps Explained:↓

A circle has circumference = 20

Calculate Area, Circumference, Radius, Diameter

Calculate radius (r):

C = 2πr

Rearranging the equation, we get:

r  =  C
  

r  =  20
  2 * 3.1415926535898

r  =  20
  6.2831853071796

r = 3.1830988618379

Calculate diameter (d):

d = 2r

d = 2 * 3.1830988618379

d = 6.3661977236758

Calculate Area (A):

A = πr2

A = π * 3.18309886183792

A = 10.1321π or 31.8309

Final Answers

r = 3.1830988618379
d = 6.3661977236758
A = 10.1321π or 31.8309

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Related Calculators:  Unit Circle  |  Circle Equation  |  Annulus