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1. The volume of a hemisphere is 5749.33 cubic cm. Find its diameter (in cm).
(A): 14
(B): 56
(C): 42
(D): 28
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By: anil on 05 May 2019 02.04 am
Let radius of hemisphere = $$r$$ cm Volume of hemisphere = $$frac{2}{3} imespi r^3$$ => $$frac{2}{3} imesfrac{22}{7} imes(r)^3=5749.33$$ => $$(r)^3=5749.33 imesfrac{21}{44}$$ => $$(r)^3=274.399equiv2744$$ => $$r=sqrt[3]{14 imes196}=14$$ cm $$ herefore$$ Diameter = $$2 imes14=28$$ cm => Ans - (D)
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SSC CHSL 15 March 2018 Evening Shift
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