Oops. Disregard the first sentence. I misread the problem. But I think I got the formula right. Tom Thomas Cole wrote: > Richard, > > I'm going to assume that if the circumference of the half circle is > equal to 10 cm, that means it would be 20 cm if it were a full circle. > I'm also assuming that the maximum area of the combined figure is when > the rectangle's sides are of equal length. > > Thus, if 3D + piD/2 = 10 cm, then D = 2.1878 cm. > > Are you sure this isn't geometry? > > Sined, > Tom Cole > > Richard Brekne wrote: > >> Ok guys and gals... so you think you remember you High School Trig eh ?? >> >> Here is a refresher problem >> >> A half circle is placed on top of a rectangle such that its diameter is >> the top side of the rectangle. The length of the 3 remaining sides of >> the rectangle, plus the circumference of the half circle is equal to 10 >> cm. >> >> Question: What are the lengths of the sides of the rectangle when the >> area of the combined figure is at its maximum ? >> >> >> ... just in case you are bored with your weekend :) >> >> Cheers >> RicB >> >> >> > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives > >
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