anonymous
  • anonymous
Drawing.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
|dw:1338436072983:dw|
anonymous
  • anonymous
AB has 150 degrees. Whats the area of AOB?
anonymous
  • anonymous
...which one is o...i only see A, B, &C...

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anonymous
  • anonymous
sorry !! O is the center
anonymous
  • anonymous
|dw:1338436524089:dw|
anonymous
  • anonymous
okay... soo hold on
anonymous
  • anonymous
|dw:1338436260093:dw|
anonymous
  • anonymous
...but angle a-b....
anonymous
  • anonymous
|dw:1338436293890:dw| would the angel be something like that?...
anonymous
  • anonymous
Sowwy, idk D: i hope someone else can help you...
anonymous
  • anonymous
|dw:1338436594595:dw|
anonymous
  • anonymous
awh ok :(
anonymous
  • anonymous
very sorry.
anonymous
  • anonymous
Hey Satellite, can you help me?
anonymous
  • anonymous
|dw:1338436556319:dw| this area?
anonymous
  • anonymous
Yeah!
anonymous
  • anonymous
so total area if the radius is 4 is \(16\pi\) and you are missing a piece. the total number of degrees is 360 so you are missing a \(\frac{150}{360}\) of the circle leaving you with \(\frac{210}{360}=\frac{7}{12}\) of the circle
anonymous
  • anonymous
your last job is to multiply \(16\pi\times \frac{7}{12}\)
anonymous
  • anonymous
Ah I dont understand :( I hate math so much..
anonymous
  • anonymous
ok lets go slow
anonymous
  • anonymous
radius of the circle is 4 right? i mean from the picture
anonymous
  • anonymous
When my teacher did it in class, it was much faster and more simple I just forget what he did..
anonymous
  • anonymous
yeah
anonymous
  • anonymous
and the area of a circle with radius \(r\) is \(\pi r^2\) in this case \(\pi\times 4^2=16\pi\) so if a piece was not missing, the whole area would be \(16\pi\)
anonymous
  • anonymous
4 times 150 = 600.. 600 / 360 = 120 degrees?
anonymous
  • anonymous
so the only question is, what portion of the circle is left
anonymous
  • anonymous
hold on degrees is a measure of an angle. area measures something entirely different
anonymous
  • anonymous
Oh yeah im sorry
anonymous
  • anonymous
I was doing length
anonymous
  • anonymous
the whole circle contains 360 degrees and you are missing 150 of them so you have left \(360-150=210\) degrees
anonymous
  • anonymous
It's Area im trying to find sorry
anonymous
  • anonymous
therefore you have what portion of the whole circle left shaded? it is \[\frac{210}{360}=\frac{7}{12}\] i.e you have seven twelfth of the circle left shaded
anonymous
  • anonymous
the entire circle has area \(16\pi\) and you have \(\frac{7}{12}\) of it left, so your area is \[16\pi\times \frac{7}{12}=\frac{28\pi}{3}\]
anonymous
  • anonymous
You know what excuse my language. flutter math. All you need in life is Add Subtract Multiply and Divide. No, i'm not going to be a engineer, so needing all of this is out of the question. This kind of stuff does not work well in my brain. I feel it's unfair that us less fortunate people have to pay the price. Bad grades and getting spanked. No matter what I do I just dont get this stuff, I try really hard. I've been studying for this final exam for about 5 hours now, and I probably learned nothing. This is a load of crap and it's not fair. Sorry for wasting you time with this problem i'll be going to sleep now do to its 12:15 am here. Thanks.

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