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     EduGorilla 
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    A sphere of radius 2 cm is put inside a hollow sphere of outer radius 10 cm. If the inner volume of the hollow sphere is 76π/3, find the inner radius of the hollow sphere.

    Options :-

    1. 9.9 cm
    2. 9 cm
    3. 3 cm
    4. 7.9 cm
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