1. How many spherical balls of radius 1 cm can be made by melting a hemisphere of radius 6 cm?





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  • By: anil on 05 May 2019 01.46 am
    Let $$n$$ balls can be made => Volume of hemisphere = $$n imes $$ Volume of sphere => $$n imesfrac{4}{3}pi (r)^3=frac{2}{3}pi(R)^3$$ => $$2n imes (1)^3=(6)^3$$ => $$n=frac{216}{2}=108$$ => Ans - (B)
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