The area of the base of a cone is $64\pi cm^{2}$ while its slant height is 17 cm. This cone is remolded to obtain a solid sphere. The radius of this sphere will be:

The area of the base of a cone is $64\pi cm^{2}$ while its slant height is 17 cm. This cone is remolded to obtain a solid sphere. The radius of this sphere will be:
1). $2\sqrt[3]{40}cm$
2). $2\sqrt[3]{30}cm$
3). $8\sqrt[3]{40}cm$
4). 6.5 cm

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