The radius of a circle is 12cm and an arc of a circle measures 55 degrees, what is the length of the arc in cm?

Answer 1

arc length = radius times angle measured in radians = 12 x 55(pi/180) = 11p/3 = about 11.52 cm

one radian = 180/3.14159 = 57.3 degrees

12 x 55/57.3 = about 11.52 cm = arc length