Question 1171346
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{{{V = (1/3)(pi)(r^2)(h)}}}<br>
{{{125(pi) = (1/3)(pi)((2x-5)^2)(3x)}}}<br>
{{{125 = ((2x-5)^2)(x)}}}<br>
That's going to give you a cubic equation that you will need to solve....<br>
So let's guess that the answer is a "nice" number.<br>
125 = 5*5*5 gives us a clue; and a bit of easy mental arithmetic shows the solution is x=5.<br>
ANSWER: The radius is 2x-5 = 5 units.<br>