A cylinder whose height is two-third of its diameter, has the same volume as that of a sphere of radius 4 cm. Find the radius of base of the cylinder.
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Given radius of sphere R = 4 cm
Height of cylinder r = (2/3) d = 4 r/3 ; where r = radius of cylinder.
Also mentioned that volume of cylinder = volume of sphere -----(A)
volume of cylinder = π r² h = π r² (4r/3) = π(4r³/3)
Volume of sphere = (4/3)πR³
According to statement A,
π(4r³/3) =(4/3)πR³
r³ = 4³
r = 4 cm
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