Answer
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r = 10
C = 20π or 62.8319
A = 100π or 314.1593
C = 20π or 62.8319
A = 100π or 314.1593
↓Steps Explained:↓
A circle has diameter = 20
Calculate Area, Circumference, Radius, Diameter
Calculate radius (r):
d = 2r
Rearranging the equation, we get:
| r = | d |
| 2 |
| r = | 20 |
| 2 |
r = 10
Calculate circumference (C):
C = 2πr
C = 2π * 10
C = 20π or 62.8319
Calculate Area (A):
A = πr2
A = π * 102
A = 100π or 314.1593
Final Answers
r = 10C = 20π or 62.8319
A = 100π or 314.1593
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Related Calculators: Unit Circle | Circle Equation | Annulus