Question

14. In a circle of diameter 42cm, if án are subtends an angle of 60° at the centre where π = 22/7.
then what will be the length of arc.​

Answer 1

Answer:

60°=60×π/180

π/3 radian

then

length of arc is given by radius × radian

hence length of arc =42/2×π/3

21× π/3

21π/3

you can substitute π=22/7

21×22/7

3

3×22/3

22cm