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osman123 | 13:04 Sat 10th Jan 2009 | Quizzes & Puzzles
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is dis right? if the diameter was 200cm squared will the formula be d x pi = area or not dunno :{ help ??
  
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diameter cant be 200cm squared - its a length , so is it 200cm?
Question Author
my bad its 200cm squared sorrie
People have been very patient with all your questions but you are monopolising the site to an unacceptable extent.

You can continue to ask questions on a single posting and not start a new one each time. Your posts have taken up what amounts to a whole page to the detriment of others and their questions.

Please use your existing post to continue your discussions.

Thank you.
Question Author
the area is 200 cm squared
Give the complete question again - sorry dont understand.
Question Author
it says find the diameter of a circle when the area is 200cm squared
Question Author
is dat okay
Area = pi x r x r
so 200 = 3.142 x r x r
200 divided by 3.142 = r x r
63.65 = r x r
then you need the square root of 63.65 for the radius
this is 7.98
now double this to get the diameter!
kayakamina in what way is osman unacceptable?

If the area of a circle is pi x r x so A = pi x r x r

then the radius is the square root of the area divided by pi.

so r = square root of (A/pi) or

square root of 200/3.141592

or about 7.97cm
Question Author
thank yoyu sooo much like i am very great ful for you trying to help me but maybe circles and radiouses i will never get how to do circles and cicumfrances
Is this a joke?
I think someone is messing around
I'm sure it cant be a quiz so would love to know what they are for

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