Area Of flat doughnut
Area Of flat doughnut
by PersianCat on Sun Jul 06, 2008 12:46 pm
Find the area of this squashed doughnut.
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Re: Area Of flat doughnut
by SengWai on Sat Jul 12, 2008 6:49 pm
are u reli that bored to find questions online just to post them XD
its not effective if u know the answer....we shud tackle it together!
its not effective if u know the answer....we shud tackle it together!
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Re: Area Of flat doughnut
by PersianCat on Sun Jul 13, 2008 5:52 pm
What, you want me to make up questions off the top of my head? 
Btw, I don't know the answer.
Btw, I don't know the answer.
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Re: Area Of flat doughnut
by PersianCat on Mon Jul 14, 2008 10:28 pm
The trick here is that you dont need to find the individual areas of the circles.
Since from the triangle we have,
R2 = r2 + d2.
Then π R2
π r2 = π d2 = 25π.
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