anonymous
  • anonymous
The image below is a triangle drawn inside a circle with center O:
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
anonymous
  • anonymous
Which of the following expressions shows the area, in square inches, of the circle? (π = 3.14) 3 ⋅ 3.14 ⋅ 22 3.14 ⋅ 32 3.14 ⋅ 22 3.14 ⋅ 3
♪Chibiterasu
  • ♪Chibiterasu
Well we know the diameter.

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♪Chibiterasu
  • ♪Chibiterasu
And we need the radius.
♪Chibiterasu
  • ♪Chibiterasu
Do you know what the radius is?
Plasmataco
  • Plasmataco
The diameter is 6 so the radius is 3 the formula for the area of a circle is 2radius squared themes pi so three squared times pi is nine pi
anonymous
  • anonymous
is the radius 4 inches?
anonymous
  • anonymous
or 3 inches?
♪Chibiterasu
  • ♪Chibiterasu
The radius is 3 because the line going through the center is 6 inches.
Plasmataco
  • Plasmataco
Do u see how the line with the length of six passes through the center?
Plasmataco
  • Plasmataco
Divide it by two because the radius is half the diameter
Plasmataco
  • Plasmataco
I'm not sure why it isn't one of the options
anonymous
  • anonymous
oh OK so its none of the answer choices :/ @Plasmataco
Plasmataco
  • Plasmataco
It should be 9 times 3.14
anonymous
  • anonymous
i'll ask for help ;) @jim_thompson5910
Plasmataco
  • Plasmataco
Ok. Don't use me as a source too much. @jim_thompson5910 is probably a better source because I'm Only 13
anonymous
  • anonymous
same lol
Plasmataco
  • Plasmataco
:3
anonymous
  • anonymous
this is a review and im bad at math :b
jim_thompson5910
  • jim_thompson5910
I'm guessing choice B is supposed to say \[\Large 3.14 \cdot 3^2\] ? or no?
anonymous
  • anonymous
yup
anonymous
  • anonymous
so its b? @jim_thompson5910
Plasmataco
  • Plasmataco
Oh yeahhhhh. It is the highest possibility
anonymous
  • anonymous
OK thanks! :)
jim_thompson5910
  • jim_thompson5910
yeah it's B since you use the area of a circle formula \[\Large A = \pi*r^2\]

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