Transposition/re-arrangement of equation

  • Thread starter russjai
  • Start date
  • #1
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Im having issues with my weak algebraic skills trying to correctly re-arrange the following equation for "d"

110=(24/(pi*d^2))+((3.5/(pi*d^4/64))*(d/2)

i know that d=70 .

I have no idea how to attack this transposition.

Could someone please give me a few pointers or point me to a video that will help?

Thanks in advance
 

Answers and Replies

  • #2
tiny-tim
Science Advisor
Homework Helper
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hi russjai! :smile:

(try using the X2 button just above the Reply box :wink:)
110=(24/(π*d2))+((3.5/(π*d4/64))*(d/2)

if i'm reading it right, that's of the form A = B/d2 + C/d3

you can multiply throughout by d3 to make it Ad3 - Bd - C = 0

there's no easy way to solve that, and the solution certainly won't be a whole number :redface:
 

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