Posted by Shane on Sunday, September 1, 2013 at 2:46am.
Calculate the arc length that subtends an angle of 55 degree at the centre of a circle with radius r = 5cm.

maths  Graham, Sunday, September 1, 2013 at 3:05am
An arc length l of radius r and angle θ (in radian measure) is:
l = rθ
Convert the angle from degrees to radians. Multiply the radius by that measure.