help please

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1 Attachment
so here is what we have:|dw:1351376665576:dw|
what we want to do is make a triangle out of that and use the Pythagorean theorem (\[A^{2} +B^{2} = C^{2}\])

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ok, writing as you type :)
|dw:1351376894963:dw|
so A(5+10) B(4+3) is \[15^{2}+8^{2}= 225+64= \sqrt{289} = 17\]
that gives the diameter which is 2r so the radius is 8.5
wait it's 7 not 8 lol
7.5 or just 7?
so that changes it to 225+49 =274
the square root of that is 16.55 divided by 2 is 8.276
so 8.3?
do you see where the numbers come from?
yes i was just checking. trying to write fast lol
it would have been neater if i didn't use 8 on the clean example lol
lol yes lots of scratch now haha. so just to be sure its 8.3?
yes that is what it rounds to

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