an arc subtends an angle of 70 degree at the centre of a circle and its length is 132mm. find the radius of the circle?
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Maths
Areas Related to Circles
Area of Sector and Length of an Arc
Find the length of the arc ...
MATHS
EASY
Find the length of the arc in terms of π that subtends an angle of 30
∘
at the centre of a circle of radius 4 cm.
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ANSWER
⇒ θ=30
o
and r=4cm
⇒ Length of an arc =
360
o
θ
(2πr)
Where, θ is angle subtended at a center.
2πr is circumference of a circle.
⇒ Length of an arc =
360
o
30
o
×2π×4
⇒ Length of an arc =
12
2π×4
∴ Length of an arc =
3
2π
Step-by-step explanation:
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