Question

find the length of an arc of a circle with substance and angle of 108at the centre is if the radius of the circle is 15 CM.

Answer 1

Step-by-step explanation:

length of the diameter=r×2=30cm

perimeter of half circle=πr=22/7×15=330/7

length of the arc=330/7-(30)

=(330-210)/7

=120/7cm