braebraethekuni braebraethekuni
  • 14-05-2019
  • Mathematics
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PLLLLEEEAAAASSSSSEEEE HELP!

PLLLLEEEAAAASSSSSEEEE HELP class=

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jimrgrant1 jimrgrant1
  • 14-05-2019

Answer:

see explanation

Step-by-step explanation:

The length of the arc is calculated as

arc = circumference of circle × fraction of circle

      = 2πr × [tex]\frac{90}{360}[/tex] ← r = 1

      = 2π × [tex]\frac{1}{4}[/tex] = [tex]\frac{\pi }{2}[/tex] ≈ [tex]\frac{3.14}{2}[/tex] = 1.57

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