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Paladinen [302]
3 years ago
5

A circle with circumference 20 has an arc at 72 central angle. what is the length of the arc

Mathematics
1 answer:
Vsevolod [243]3 years ago
5 0

Answer:

4 units

Step-by-step explanation:

\because \: l =  \frac{ \theta}{360 \degree}  \times c \\  \\  \therefore \: l =  \frac{72 \degree}{360 \degree}  \times 20 \\  \\ \therefore \: l =  \frac{72 \degree}{18\degree} \\  \\ \therefore \: l =  4 \: units

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