Question

Find length of the arc for given radius and central angle
1) radius =36 cm. Angle = 60 °

2) radius = 16 cm , Angle= 45 °.​

Answer 1

length of arc = (theta/360)× 2πr

1) r= 36. theta= 60

= 60/360× 2×22/7×36

= 264/7

= 37. 7

2) r= 16. theta= 45

= 45/360×2×22/7×16

= 1/8× 2×22/7×16

= 88/7

= 12.5