(v) The angular measure of an arc of a circle of radius 21 cm
is 150°. Find the length of that arc.
Answers
Answered by
82
Answer:
- 55 cm
Step-by-step explanation:
Given
- Angular measure of an arc of a circle (radius) = 21 cm
- Angle of sector = 150°
To find
- Length of the arc
Solution
We have :-
- r = 21 cm
- θ = 150°
We shall find length of arc using the formula :-
- (θ / 360) ×2πr
- (150 / 360) × 2 × 22/7 × 21
- (15 / 36) × 44/7 × 21
- (15/36) × 132
- 55
Hence, the length of arc is 55 cm.
Answered by
40
Answer:
(θ / 360) ×2πr
(150 / 360) × 2 × 22/7 × 21
(15 / 36) × 44/7 × 21
(15/36) × 132
55
Step-by-step explanation:
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