Calculate 81590

Calculate the central angle if r = 72 cm and the arc length is 12.4 cm.

Correct answer:

α =  9.8676 °

Step-by-step explanation:

r=72 cm l=12.4 cm  o=2π r=2 3.1416 72452.3893 cm  α=360 ol=360 452.389312.4=9.8676=9°523"

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