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A simple question

  1. Mar 2, 2013 #1
    hey >>>

    i want to Calculate this area Equation :

    A= pi *(D^2*d^2)*p*n*k

    n= 0.5
    k=0.4

    but the Valuable of ( D-d-p) given like this :

    D:d:p
    4 1 4

    My question is :

    i dont understand Valuable of ( D-d-p)

    is it Number or proportion ... just can any one make it clear to me

    Please, Please, Please,
     
  2. jcsd
  3. Mar 2, 2013 #2

    SteamKing

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    It looks like a series proportion to me. D and p are each 4 times the value of d.
     
  4. Mar 2, 2013 #3
    Thank you for your response .. u mean

    D= 4d P=4d
     
  5. Mar 2, 2013 #4

    SteamKing

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