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Math Help - CSET subtest 3 Question

  1. #1
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    CSET subtest 3 Question

    Hi everyone.. im new to the forums, hopefully someone can help me out with this..

    I took the math subtest 3 (calc/math history) and in the free response portion, there was a question on finding the radius of a circle.. inside the circle was an Isosceles Triangle, legs 50 50 and base 60. this triangle was split into 3 smaller triangles via 3 lines, one line going straight down the middle of the triangle, and the other 2 lines starting from the 2 base angles, meeting at the center of the circle. It was a math history problem, does anyone recall any information about the history behind this problem? I cannot remember.. also, i am having difficulty solving this... If a picture helps, i can draw it out and take a picture and post it. If this is the wrong place to post this, can you please suggest a better thread? thanks!
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  2. #2
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    Mar 2010
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    Talking Susa Tablet

    This is my first response ever. I never planned on joining, but I saw your question and wanted to help, b/c I'm getting ready to take the CSET Math Subtest III this Saturday and I had this problem in my notes. I couldn't just walk away and not help when I know the answer to your question. That circle problem is known as the Susa Tablet. It is rather difficult to explain without a diagram, so here's a link that will take you to the answer. After clicking the link, scroll down to the SECOND EXAMPLE. Pythagorean Knowledge In Ancient Babylonia
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