RebeccaPink6398
  • RebeccaPink6398
can someone please help me to understand this? Pie
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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RebeccaPink6398
  • RebeccaPink6398
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anonymous
  • anonymous
Well the area of a circle is Pi(r)^2, so just put in the radius where it says r
RebeccaPink6398
  • RebeccaPink6398
i dont get what your saying like what do i do first.

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RebeccaPink6398
  • RebeccaPink6398
@madison.bush
anonymous
  • anonymous
just plug in the radius to that equation i just gave you. So it will look like \[A=\pi(9)^2\]
RebeccaPink6398
  • RebeccaPink6398
ok so( pie times 9) times 2?
anonymous
  • anonymous
no its pi times 9 squared. 9 squared is 81. So the final equation is \[A=81\pi cm^2\]
anonymous
  • anonymous
so the anwer is D
RebeccaPink6398
  • RebeccaPink6398
i got C A. 1017.36 cm3 B. 169.56 cm3 C. 254.34 cm3 D. 84.78 cm3 @madison.bush
anonymous
  • anonymous
yes it is C.
RebeccaPink6398
  • RebeccaPink6398
lol okay thanks!

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