Respuesta :

The complete circumfernce is 2pi
The fraction of the circumfrence is: 
(3pi/5)/(2pi)=(3pi/5)/(2pi/1)=(3pi*1)/(5*2pi)=(3pi)/(10pi)=3/10

Answer: 3/10 of the circumference
carlosego

The full arc of the circumference is:

 S = 2pi * r

 The arch is:

 S '= (3/5) pi * r

 Dividing we have:

 S '/ S = ((3/5) pi * r) / (2pi * r)

 Simplifying we have:

 S '/ S = ((3/5)) / (2)

 S '/ S = ((3/10))

 Answer:

 The fraction of the arch is:

 S '/ S = ((3/10))

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