Find the length of arc AB for each circle.
1 answer:
Answer:
see explanation
Step-by-step explanation:
The length of the arc is calculated as
AB = circumference of circle × fraction of circle
(11)
AB = 2πr × 
= 2π × 7 × 
= 14π × 
=
π in
(12)
AB = 2πr ×
( r = 20 ÷ 2 = 10 )
= 2π × 10 × 
= 20π × 
=
π
=
π cm
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