Arc-sector

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

Final Answer:

α =  150.5316 °
r =  6.47 cm

Step-by-step explanation:

l=17 cm S=55 cm2 S = π r2  360a  l = 2 π r  α/360  r α = 180 l / pi  S = r l / 2 r=l2 S=172 55=171106.4706 cm  α=90 π Sl2=90 3.1416 55172=150.5316=150°3154"



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