An ice cream cone is filled with ice cream and surmounted ice cream in the formof a hemisphere on top of the cone. If the hemispherical surface is equal to the lateral area of the cone, what is the total volume (in cubic inches) of the ice cream if the radius of the hemisphere is 1 inch and assuming the diameter of the hemisphere is equal to the diameter of the cone? 3.91 3.45 4.12 4.25

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