l Circle area = 20
of a circle is
I want to calculate
Area
Circumference
Radius
Diameter
All
  
Answer
r = 2.5231325220202
C = 5.0463π or 15.8533
d = 5.0462650440403


Steps Explained:

A circle has area = 20

Calculate Area, Circumference, Radius, Diameter

Calculate radius (r):

A = πr2

Rearranging the equation, we get:

r2  =  A
  π

r  =  √A
  √π

r  =  √20
  √3.1415926535898

r  =  4.4721359549996
  1.7724538509055

r = 2.5231325220202

Calculate circumference (C):

C = 2πr

C = 2π * 2.5231325220202

C = 5.0463π or 15.8533

Calculate diameter (d):

d = 2r

d = 2 * 2.5231325220202

d = 5.0462650440403

Final Answers

r = 2.5231325220202
C = 5.0463π or 15.8533
d = 5.0462650440403

Related Calculators:  Unit Circle  |  Circle Equation  |  Annulus