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by **FWT** on Sat Mar 07, 2009 6:45 pm

how would i do probablty wit a dart board thats R=9in + r=5in. please help i cant figure this out.

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by **stapel_eliz** on Sat Mar 07, 2009 11:58 pm

FWT wrote:how would i do probablty wit a dart board thats R=9in + r=5in. please help i cant figure this out.

At a guess, you're supposed to find the probability that a dart will hit some specified portion of the board...?

Find the areas of each of the regions: the whole board (using R), the inner portion (using r), and the outer ring (subtracting the second value from the first). (Use $A_R\, =\, \pi R^2$ and $A_r\, =\, \pi r^2$ to find the first two areas.)

The probability of hitting the outer or inner area will be (outer or inner area)/(total area).

If I have misunderstood your meaning, please reply with corrections. If you get stuck, please reply showing your work. Thank you!

by **FWT** on Wed Mar 11, 2009 12:07 pm

i figured it out

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how to do probability with a dart board thats R=9in, r=5in

how to do probability with a dart board thats R=9in, r=5in

Re: how to do probability with a dart board thats R=9in, r=5in