Write down the formula for following
(1) Length of arc
(2) Length of a sector
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Answer:
The Formula of Length of arc
s is the Length Formula.
r is the radius of the circle
o is the central angle of arc.
Explanation:
Arc length =2r(0/360)
0 is the Length (in degrees) substended by an arc at the centre of the circle .
360 is the angle of an complete rotation .
From the above illustration,the length of arc (drawn in red )is the distance from point A to Point B.
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