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Hi Eyuel, Assume the ice cream scoop is a sphere of radius $r$ inches and then the top of the cone will also have radius $r$ inches. Suppose the height of the cone is $h$ inches. You want the volume of the scoop of ice cream to equal the volume of the cone. Use the equations for the volume of a sphere and the volume of a cone to write an equation that says these two volumes are equal. Simplify as much as you can. This will give you an equation for $h$ in terms of $r.$ Substitute $r = 3$ inches. Penny |
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Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. |