Pies are circles are too.

... and Pi Day is coming ...

Pi pie

D is an angle in degrees R is an angle in radians

CONVERTING DEGREES AND RADIANS

Convert 20° into radians.

Convert 25° into radians.

Convert radians into degrees.

Convert radians into degrees.

A bicycle wheel has a diameter of 0.4 meters. A point on the outer rim travelled 2.6 m. How many radians has the wheel turned?