A circle has radius = 10
Calculate Area, Circumference, Radius, Diameter
C = 2πr
C = 2π * 10
C = 20π or 62.8319
d = 2r
d = 2 * 10
d = 20
A = πr2
A = π * 102
A = 100π or 314.1593
An Automated Online Math Tutor serving 8.1 million parents and students in 235 countries and territories.