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Math Help - rearranging equation to give....

  1. #1
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    rearranging equation to give....

    S=pi/4 x d^2/K x (s_i+s_ii) n x o x pi x d/K x sigma x s_i

    how can i go about rearranging the above equation if I want to find out the value of d^2 (d squared). Any help on this would be awesome. Thanks
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  2. #2
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    Re: rearranging equation to give....

    Can you confirm your equation is \displaystyle S = \frac{\pi}{4}\times \frac{d^2}{K}\times (s_{i}+s_{11})\times n \times o \times \pi \times \frac{d}{K}\times \sigma \times s_i ?
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  3. #3
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    Re: rearranging equation to give....

    I pickslides is correct (but s_{ii}, not s_{11}), then S is a whole bunch of stuff times d^3: S= =Ad^3. Divide both sides by A: d^3= \frac{S}{A} and then take the third root of both sides: d= \sqrt[3]{\frac{S}{A}}. If you really want t^2, finish by squaring both sides: d^2= \left(\sqrt[3]{\frac{S}{A}}\right)^2= \sqrt[3]{\frac{S^2}{A^2}}= \left(\frac{S}{A}\right)^{2/3}.
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