Answer
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r = 2
C = 4π or 12.5664
A = 4π or 12.5664
C = 4π or 12.5664
A = 4π or 12.5664
↓Steps Explained:↓
A circle has diameter = 4
Calculate Area, Circumference, Radius, Diameter
Calculate radius (r):
d = 2r
Rearranging the equation, we get:
| r = | d |
| 2 |
| r = | 4 |
| 2 |
r = 2
Calculate circumference (C):
C = 2πr
C = 2π * 2
C = 4π or 12.5664
Calculate Area (A):
A = πr2
A = π * 22
A = 4π or 12.5664
Final Answers
r = 2C = 4π or 12.5664
A = 4π or 12.5664
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Related Calculators: Unit Circle | Circle Equation | Annulus