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A hollow sphere of internal and external radii 2cm and 4cm is melted into a cone of basse radius 4cm. find the height and slant height of the cone______?

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Given that internal radii of hollow sphere (r) = 2cm

External radii of hollow sphere (R) = 4cm

Given that sphere is melted into a cone

Base radius of cone = 4cm 

Let slant height of cone be l

Let height of cone be h

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