A circle has diameter = 15
Calculate Area, Circumference, Radius, Diameter
d = 2r
r = 7.5
C = 2πr
C = 2π * 7.5
C = 15π or 47.1239
A = πr2
A = π * 7.52
A = 56.25π or 176.7146
An Automated Online Math Tutor serving 8.1 million parents and students in 235 countries and territories.