l Circle diameter = 7
of a circle is
I want to calculate
Area
Circumference
Radius
Diameter
All
  

A circle has diameter = 7

Calculate Area, Circumference, Radius, Diameter

Calculate radius (r):

d = 2r

Rearranging the equation, we get:

r  =  d
  2

r  =  7
  2

r = 3.5

Calculate circumference (C):

C = 2πr

C = 2π * 3.5

C = or 21.9911

Calculate Area (A):

A = πr2

A = π * 3.52

A = 12.25π or 38.4845

Final Answers


r = 3.5
C = or 21.9911
A = 12.25π or 38.4845