anonymous
  • anonymous
Help Needed! Find the area of each of the following shaded parts. Assume all arcs are circular. Leave all answers in terms of pi.
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
1 Attachment
campbell_st
  • campbell_st
the area of the large semi-circle is \[A = 1/2 \pi r^2\] the 2 small semi-circles has the same radius r/2 and combined have the area of a whole circle \[A=\pi (r/2)^2 = 1/4 \pi r^2\]
anonymous
  • anonymous
Are of each part is: \[1/2(1/2\pi r ^{2})\]

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anonymous
  • anonymous
So would the answer be \[A= 1/4\pi r ^{2}\] ?
anonymous
  • anonymous
yes
campbell_st
  • campbell_st
the green shaded area is A = 1/4 pi r^2 that appears to be the only area you need to find
anonymous
  • anonymous
yes, just the shaded portion. Thank you both for helping me!

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