gabbyalicorn
  • gabbyalicorn
https://www.dropbox.com/s/ucwcxo0j6zgi4hd/Screenshot%202015-06-09%2014.06.05.png?dl=0
Mathematics
chestercat
  • chestercat
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gabbyalicorn
  • gabbyalicorn
gabbyalicorn
  • gabbyalicorn
gabbyalicorn
  • gabbyalicorn

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gabbyalicorn
  • gabbyalicorn
anonymous
  • anonymous
Well I see a rectangle with a length of 9 and width of 8.
gabbyalicorn
  • gabbyalicorn
so 9 x 8 = 72
gabbyalicorn
  • gabbyalicorn
so one of them is B?
anonymous
  • anonymous
Right. And if that's a quarter circle, then 8 will be the radius. So find the area of the circle with r=8 and then multiply it by 1/4.
gabbyalicorn
  • gabbyalicorn
soz 3.14 x 8 div 4 ?
gabbyalicorn
  • gabbyalicorn
which is 6.28
anonymous
  • anonymous
Area of a circle is \[A=\pi*r^{2}\] not \[A=\pi*r\]
gabbyalicorn
  • gabbyalicorn
soz....3.14 x 64
gabbyalicorn
  • gabbyalicorn
which is 200.96
anonymous
  • anonymous
The choices keep it in pi. So it would be \[64\pi\] Now you have to divide by 4 \[\frac{64\pi}{4}\]
gabbyalicorn
  • gabbyalicorn
i got 50.24
anonymous
  • anonymous
KEEP IT IN PI \[\pi=\pi\] not \[\pi=3.14\]
gabbyalicorn
  • gabbyalicorn
so 64 div 4?
anonymous
  • anonymous
And I mean in a format case, not a literal one
anonymous
  • anonymous
yes 64/4.
gabbyalicorn
  • gabbyalicorn
16 which is also c :3
anonymous
  • anonymous
\[\frac{64\pi}{4}=16\pi\] which yes, is choice c
gabbyalicorn
  • gabbyalicorn
so just B and C :3
anonymous
  • anonymous
Yep, it would be those two
gabbyalicorn
  • gabbyalicorn
Thank you!
anonymous
  • anonymous
No problem :)

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