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    Algebra...

    Can anyone tell me how to get the answer to this problem..? lol

    S= 2(3.14)rh +2(3.14) r squared , For H

    Thanks

    #2
    Only thing in that that I understand in that is "I like PIE", LOL!! Sorry I'm not much help..

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      #3
      Math is WRONG! Pie are round!

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        #4
        HAY HAY HAY nothing that requires brain power here please.

        Another way of saying don't make us feel dumber.

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          #5
          What is S, and also by 3.14 do you mean pi

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            #6
            H = (S - 2*(3.14)*r squared) / 2*3.14*r

            the formula for surface area of a solid cylinder

            gotta have 2 of the variables to get the third
            Last edited by bcdawg1; 01-09-2010, 06:58 PM.

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              #7
              You have too many variables to solve for only one. I'm guessing this is some sorta surface area formula or something. All I could do is try to simplify it in terms of H:

              2(3.14)h=[2(3.14)r squared-S ]/r

              Geez it looks more complicated than it started now, but if you put up some particular numbers instead of variables it would be way easier.

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                #8
                It's been years, but try

                [S/2(3.14r)] - r = h
                or
                [S/6.28(2r)] -r = h

                (they're the same)

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                  #9
                  3.14= pie the symbol. it stays in letter/symbol form I have no variables.

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                    #10
                    Answers:

                    a) looks like calculus not algebra

                    b) equation wants the surface area of a sphere

                    c) who really even cares

                    d) all of the above



                    I'm going with D

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                      #11
                      It's not calculus- that's what dentists call the yellowish crud you get on your teeth and hygienists scrape off.Plus no differential or integral symbols. My ****s are already starting to ache thinking about calc and differential equations.

                      6 and 8 are both correct. 7 it does not matter how many variables H is a function of, in this case it's 2.

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                        #12
                        Yea! what Bill said

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                          #13
                          I am assuming that H is the height of something, so the formula isn't for the surface area of a sphere, which is 4*pie*r squared. I didn't say that it mattered how many variables H is a function of. What I meant was to sovle this and get a real number for H, you must eliminate other variables, otherwise you will just get other equations of H with the other variables still in them.

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                            #14
                            Originally posted by bcdawg1 View Post
                            H = (S - 2*(3.14)*r squared) / 2*3.14*r
                            X2 this is what you are looking for I believe. It is solve for H.

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                              #15
                              Surface is are if a function of 2 variables- the height and the radius of the cylinder. Solving for H, it is a function of the surface area and the radius. Are we saying the same thing?

                              Pi are round, not square!

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