2D shape
Circle with radius 20
- Circle
- r = 20
- area 1,256.6371
A circle of radius 20 has an area of 1,256.637061 square units and a circumference of 125.663706 units. Its diameter is 40, and its area expressed exactly is 400π.
Measurements
Radius20
Diameter40
Circumference125.663706142πr
Area1,256.63706144πr²
Area in terms of π400π
Sector area per degree3.4906585
Arc length per degree0.34906585
Inscribed square side28.28427125the largest square that fits inside
Circumscribed square side40
Formulas used
AreaA = πr²
CircumferenceC = 2πr
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