geometry

The face-off areas in ice hockey have a diameter of 29.9 feet. Find the area of a face-off circle. Use 3.1.4. for pi. Round to the nearest tenth if necessary.

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asked by Olive
  1. a = 3.14 * 29.9^2 = ...

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    posted by Steve
  2. A = pi * r^2

    A = 3.14 * 14.95^2 =

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    posted by Ms. Sue
  3. ouch! Go with Ms Sue!
    Always read problems carefully...

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    posted by Steve
  4. Although I was an English and social studies teacher, occasionally I taught a section of 7th grade math. When I discovered that I was only about 95% accurate when demonstrating on the board, I was embarrassed. I told the class that if they discovered I had made a stupid mistake, I'd give anyone extra credit for politely calling it to my attention. Worked like a charm. <g>

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    posted by Ms. Sue
  5. I was thinking of something along the same lines, but couldn't find a good way to put it in action. Thank you for sharing the bright idea.

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    posted by MathMate
  6. You're welcome. :-)

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    posted by Ms. Sue
  7. I recall my class in analytic geometry in high school. There was one guy named Andy who would read a comic or something during one of Mr. Jarmon's involved solutions. After two blackboards were filled with equations and things didn't come out right, Andy would look up and in a few seconds point out where the teacher had erred. He'd have been loaded up with extra credit in your class, Ms Sue! Of course, he naturally didn't need it.

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    posted by Steve

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