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 Foo Off-Topic chit chat with no general subject.

 07-15-08, 09:24 PM #1 phantomcow2 la vache fantôme Thread Starter     Join Date: Aug 2004 Location: NH Bikes: Posts: 6,266 Mentioned: 0 Post(s) Tagged: 0 Thread(s) Quoted: 1 Post(s) Semicircle A rectangle is inscribed in a semicircle of radius r, as shown in the figure, where r = {6**. Express the area A as a function of the height h of the rectangle using the given radius r of the circle. __________________ C://dos C://dos.run run.dos.run
 07-15-08, 09:31 PM #2 bluebottle1 Kicked out of the Webelos     Join Date: Apr 2005 Bikes: Posts: 239 Mentioned: 0 Post(s) Tagged: 0 Thread(s) Quoted: 0 Post(s) h x square root of 72 But I could be wrong. Geometry was a long time ago.... __________________ ______________________________________________ Kicked out of the Webelos.
 07-15-08, 10:03 PM #3 jschen riding once again     Join Date: Oct 2005 Location: San Diego, CA Bikes: '06 Cervelo R3, '05 Specialized Allez Posts: 7,359 Mentioned: 0 Post(s) Tagged: 0 Thread(s) Quoted: 0 Post(s) Draw some relevant line segments. That might help. Show what you've tried or thought about so far... it might help us help you. __________________ If you notice this notice then you will notice that this notice is not worth noticing.
 07-15-08, 10:04 PM #4 deraltekluge Senior Member     Join Date: Sep 2006 Bikes: Kona Cinder Cone, Sun EZ-3 AX Posts: 1,195 Mentioned: 0 Post(s) Tagged: 0 Thread(s) Quoted: 0 Post(s) The area of the rectangle is 2*h*b Can you figure out what b is, in terms of h and r?
 07-15-08, 10:17 PM #5 alainp Senior Member     Join Date: May 2007 Location: SF East Bay Bikes: '07 Look 585 Ultra, '07 Trek Madone SL 5.2, '06 Marin Pine Mountain MTB, '94 Everest Altitude MTB Posts: 448 Mentioned: 0 Post(s) Tagged: 0 Thread(s) Quoted: 0 Post(s) Pythagorean Theorem: b^2 + h^2 = r^2 Last edited by alainp; 07-15-08 at 10:28 PM.
 07-15-08, 10:20 PM #6 x136  phony collective progress     Join Date: Sep 2006 Location: San Hoosey Bikes: http://velospace.org/user/36663 Posts: 2,981 Mentioned: 0 Post(s) Tagged: 0 Thread(s) Quoted: 0 Post(s) Find the area of the full circle, cut it in half, then figure that the rectangle is somewhat smaller in area than the semicircle, and make a semi-educated guess. Life is too short to worry too much about such things. __________________
07-16-08, 12:43 PM   #7
trsidn
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Quote:
 Originally Posted by x136 Find the area of the full circle, cut it in half, then figure that the rectangle is somewhat smaller in area than the semicircle, and make a semi-educated guess. Life is too short to worry too much about such things.
yup

they just eyeballed this....

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