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Fittoniya [83]
3 years ago
13

PLLLLEEEAAAASSSSSEEEE HELP!

Mathematics
1 answer:
Lana71 [14]3 years ago
8 0

Answer:

see explanation

Step-by-step explanation:

The length of the arc is calculated as

arc = circumference of circle × fraction of circle

      = 2πr × \frac{90}{360} ← r = 1

      = 2π × \frac{1}{4} = \frac{\pi }{2} ≈ \frac{3.14}{2} = 1.57

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