Question
The radii of the ends of a frustum of a solid right-circular cone 45 cm high are 28 cm and 7
The radii of the ends of a frustum of a solid right-circular cone 45 cm high are 28 cm and 7
cm. If this frustum is melted and reconstructed into a solid right circular cylinder whose radius of base and height are in the ratio 3 : 5, find the curved surface area (in cm²) of this cylinder. [Use π = 22/7.]
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