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"25. A sector of a circle of radius 6\\( \\mathrm { cm } \\) has an angle of \\( 120 ^ { \\circ } .14 \\) is rolled up so that the two bounding\nradii are joined together to form a cone.\nFind \\( ( i ) \\) the total surface area of the cone (it) the volume of the cone."

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