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20-05-2020
Mathematics

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a circle with circumference 20 has an arc with a 72 degrees central angle. what's the length of the arc

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20-05-2020

Answer:

4 units.

Step-by-step explanation:

Let's use a ratio

72 : 360

8 : 40

1 : 5

The arc is [tex]\frac{1}{5}[/tex] of the total circumference.

[tex]\frac{1}{5} *20=4[/tex]

The arc length is 4

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