In a cincle of diameter 40cm the length of a of a chard is 20cm. find the length of the minor arc of the chard.
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Answer:
length of minor arc=20.94cm
Step-by-step explanation:
Given the length of chord =20cm
Also radius=d/2
r=40/2
r=20cm
It means all the three sides of triangle are equal
which is equilateral traingle
It makes 60° angle at centre
So length of minor arc= x/360°×2πr
l=60°/360°×2π(20)
l=1/6×40π
l=20.94cm
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