Saved Bookmarks
| 1. |
Find the length of the arc of a circle of diameter 42 cm which subtends an angle of 60° at the centre. |
|
Answer» Diameter of circle = 42 cm Radius = 42/2 = 21 cm Central angle = 60° We know that, Length of the arc = θ/360 (2πr) = 60/360 x 2 x 22/7 x 21 = 22 Length of the arc is 22 cm |
|