A 36° sector of circle has area 3.85cm^2. what is the length of arc of sector
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Area of sector = x/360. xπr 2
3.85 = 36/360xπxr2
r2=360x3.85x7. / 36x22
= 12.25
r =v12.25 = 3.5cm
Arc.length=x/360x2πr
= 36/360. x2 x 22/7x3.5=2.2cm
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