l Circle radius = 4
of a circle is
I want to calculate
Area
Circumference
Radius
Diameter
All
  

Answer
C = 8π or 25.1327
d = 8
A = 16π or 50.2655

↓Steps Explained:↓



A circle has radius = 4

Calculate Area, Circumference, Radius, Diameter

Calculate circumference (C):

C = 2πr

C = 2π * 4

C = 8π or 25.1327

Calculate diameter (d):

d = 2r

d = 2 * 4

d = 8

Calculate Area (A):

A = πr2

A = π * 42

A = 16π or 50.2655

Final Answers

C = 8π or 25.1327
d = 8
A = 16π or 50.2655


Related Calculators:  Unit Circle  |  Circle Equation  |  Annulus