3 years ago

Can someone pls help me with this

Mathematics

1 answer:

jolli1 [7]3 years ago

6 0

Answer:

8.5 pi

Step-by-step explanation:

C= 2 pi r

21 pi= 2pi r

r= 10.5

Arc length= 2pi r(145/360)

21 pi( 145/360)= 8.5 pi

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