Re: pre-cal question

Posted by Brad Paul on September 17, 2002 at 07:57:21:

In Reply to: pre-cal question posted by Brandi on September 16, 2002 at 15:04:52:

: I have a question. There is a semi-circle with a rectangle in it. The radius of the semi-circle is 10. I am supposed to find a function that models the area A of the rectangle in terms of its height h. The answer is A(h) = 2h(square root 100-h squared) when 0: Can you help?!

: Brandi
: sorry for sending so many times.

Draw a good picture. Draw the half circle then draw a rectangle inside
of it as you have described. Next draw in a radius line from the
center of the circle to one of the far corners of the rectangle. Now
draw a line straight up from the center of the circle to the edge of
the rectangle. Identify all the right triangles you can find. Label all
the lengths you can. If you do this carefully you should be very close
to the full answer.

Follow Ups:

• But......... T.Gracken 10:36:12 09/17/02 (2)
  • Mr G. ... Why h = sqrt(15.275) isa special case???.. I don't get it ...(n/t) Subhotosh Khan 11:33:19 09/17/02 (1)
    • that was not me Mr.K. I think someone is attempting to be cute -nt- T.Gracken 19:18:10 09/17/02 (0)

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