anonymous
  • anonymous
how can i find the perimeter of the shaded region? any formula for the arc?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
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anonymous
  • anonymous
This is very similar to the last question you asked. Where do you get stuck?
anonymous
  • anonymous
formulas.. :|

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anonymous
  • anonymous
i'm confused if all forulas are same or not
anonymous
  • anonymous
about the arcs
anonymous
  • anonymous
I hope now you remember the formula for the perimeter of the circle
anonymous
  • anonymous
make use of symmetry..it's helpful
anonymous
  • anonymous
yep, pi(diameter)
anonymous
  • anonymous
Yep that is right. What fraction of the circle is the arc you have here?
anonymous
  • anonymous
1/4
anonymous
  • anonymous
The other 2 sides are just str8 lines
anonymous
  • anonymous
yep.. which is equal to 20
anonymous
  • anonymous
Can you find the solution now? You have written all the necessary information down already
anonymous
  • anonymous
pi(diameter) is correct for the circle but get used to 2pi(radius), that is a more common notation
anonymous
  • anonymous
should i use the formul.. l+ 2(pi)(r)(theta/360)?
anonymous
  • anonymous
i mean l= 2(pi)(r)(theta/360)?
anonymous
  • anonymous
You do not need that. Just forget the above 2 lines.
anonymous
  • anonymous
You need the perimeter of the circle: 2pi(radius) and the fraction 1/4
anonymous
  • anonymous
oh, just that? to get the arc length?
anonymous
  • anonymous
yep
anonymous
  • anonymous
That arc length has 1/4 of the perimeter of a full circle
anonymous
  • anonymous
my answer is.. 35.71.
anonymous
  • anonymous
thank you so much:)
anonymous
  • anonymous
Yep that is it

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