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Math Help - I Need Help With Surface Area And Volume Problems

  1. #1
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    Question I Need Help With Surface Area And Volume Problems

    I need help with one of each. once I figure out how to do one, I can do the others. I'm supposed to leave pi in my answers except with spheres and that is what is throwing me. the other problems where I worked out the formulas without leaving pi in my answers I got correct. #8 I'm not supposed to leave pi in my answers but I still got it wrong.

    You don't have to give me the answer if you do not want to but can you set up the problem for me?

    Thanks! I need help with #3 here

    and 5, 7, and 8 here
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  2. #2
    MHF Contributor

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    I'm very confused on this. In order to NOT "leave pi in the problem", you must do the whole problem and THEN replace pi by a decimal number and do an additional calculation. I can't imagine why you find it easier to do the harder problem.

    Do you not know the standard formulas for these?
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