Question

3. An arc of length 20 cm subtends an angle of 144º at the centre of a circles. find the radius of the circle
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Answer 1

Step-by-step explanation:

angle/360*2*pi*r=length of arc

144/360*2*22/7*r=20cm(given)

72/45*11/7*r=20

r=7.96

I hope I am correct

I don't think this is correct

Kindly check from net

Answer 2

Answer:

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Step-by-step explanation:

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