1.

The volume of a right circular cone, whose radius of the base is the same as five-ninths of its altitude and the volume of a sphere are equal. The ratio of the radii of the cone to the sphere is:

A. \(\sqrt[3]{4}:\sqrt[3]{3}\)
B. 1 : 1
C. \(\sqrt[3]{{60}}{\rm{\;}}:3\)
D. \(\sqrt[3]{3}:\sqrt[3]{2}\)
Answer» D. \(\sqrt[3]{3}:\sqrt[3]{2}\)


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