But.........

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Posted by T.Gracken on September 17, 2002 at 10:36:12:

In Reply to: Re: pre-cal question posted by Brad Paul on September 17, 2002 at 07:57:21:

Did you ever consider that h might just equal the square root of 15.275?

Think about it!

: : 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:

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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: Did you ever consider that h might just equal the square root of 15.275? : Think about it! : : : : 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<h<10. I need to know how to get that answer! : : : 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.

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