Arc-sector

arc length = 17 cm area of sector = 55 cm2 arc angle = ? the radius of the sector = ?

Correct answer:

a =  150.5316 °
r =  6.4706 cm

Step-by-step explanation:

S=πr2a/360 l=2πra/360 ra=180l/π S=rl/2 55=r17/2 r=6.47059 cm a=90l2/(πS)=9017.52/(π55)=150.5316
r=2 55/17=6.4706 cm



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