Question 391408
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Hi,         
{{{V = (1/3)pi*r^2*h = (1/3)pi*9*h = 3h*pi cm^3 = 66cm^3}}}
substituting {{{pi}}} = 3.14
   h = 66cm^3 /3cm^2*3.14 = 7.0cm
<img src="http://upload.wikimedia.org/wikipedia/commons/d/d2/Cone_3d.png">