l Circle diameter = 13
of a circle is
I want to calculate
Area
Circumference
Radius
Diameter
All
  

Answer
r = 6.5
C = 13π or 40.8407
A = 42.25π or 132.7323

↓Steps Explained:↓



A circle has diameter = 13

Calculate Area, Circumference, Radius, Diameter

Calculate radius (r):

d = 2r

Rearranging the equation, we get:

r  =  d
  2

r  =  13
  2

r = 6.5

Calculate circumference (C):

C = 2πr

C = 2π * 6.5

C = 13π or 40.8407

Calculate Area (A):

A = πr2

A = π * 6.52

A = 42.25π or 132.7323

Final Answers

r = 6.5
C = 13π or 40.8407
A = 42.25π or 132.7323


Related Calculators:  Unit Circle  |  Circle Equation  |  Annulus
h