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Square based prism general rule

  1. May 4, 2015 #1
    • Member warned about posting with no effort
    1. The problem statement, all variables and given/known data
    See attached picture

    2. Relevant equations

    For any rectangular prism, the formulas are the following:

    Surface Area = 2(lw + wh + hl); l is length, w is width, and h is height.

    Volume = lwh; l is length, w is width, and h is height.

    For a square-based prism, the formulas are simplified into the following:

    Surface Area = 2(s^2 + 2sh); s is side of square face and h is height.

    Volume = s^2h; s is side of square face and h is height.

    3. The attempt at a solution
    I'm not sure how to start the question at all
     

    Attached Files:

  2. jcsd
  3. May 4, 2015 #2

    BvU

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    You can't use a formula for a specific subgroup (rectangular prisms) for your square-based prisms ! The latter are more general than just rectangular.

    Is there anything you did or found in question 2 that is relevant for the current exercise ?
     
  4. May 4, 2015 #3
    I don't have the question and answe on me but I will post it tomorrow
    Thanks for replying, I've no idea how to do this and it's bugging me
     
  5. May 4, 2015 #4

    BvU

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    Well, some good spirit warned you (for obvious reasons), but also moved to the calculus part of PF. Why would that be ?
     
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