Answer:
CD = 9.2 cm
Step-by-step explanation:
The arc of any circle is calculated as
arc = circumference × fraction of circle
= 2πr × [tex]\frac{66.4}{360}[/tex]
= 2π × 7.9 × [tex]\frac{66.4}{360}[/tex]
= [tex]\frac{2(7.9)(66.4)\pi }{360}[/tex] ≈ 9.2
arc CD is approximately 9.2 cm
