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A solid metallic hemisphere with radius r is melted and cast into a solid right circular cone with the radius of the base = r. What is the ratio of their curved surface areas?
$$\frac{5}{\sqrt{2}}$$
$$\frac{2}{\sqrt{5}}$$
$$\frac{3}{2}$$
$$\frac{5}{2}$$
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2Â years, 2Â months ago
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