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What's the length of an arc with a central angle of 120° and a radius of 5 inches?
1) 10
43
inches
2) 10
inches
2
3) 10
inches
4) Sinches

Respuesta :

Answer:

 10/3π ≈ 10.47

Step-by-step explanation:

Length of an arc = central angle/°in a circle · the formula for circumference of the circle.

Length of an arc = 120/360 · 2πr

Length of an arc = 1/3 · (2·π·5)

Length of an arc = 1/3 ·10π

Length of an arc = 10/3π ≈ 10.47

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