Question

Find the arc length of m CD =45 degree ; length of CD =___ r = 8 cm and m XY = 45 degree ; length of XY =___ r = 6 cm.

Answer 1

(1) arc length (CD) = πrθ/180°

= (22 x 8 x 45°)/180°

= 44 cm

(2) arc length (XY) = πrθ/180°

= (22 x 6 x 45°)/180°

= 33 cm