The angular measures of an arc of a circle of radius 21 cm is 150degree . find the length of that arc
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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.
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