If the volume of a sphere is divided by its surface area, the result is 27 cm. The radius of the sphere is · ABC26GN4996

Subject: General Aptitude · Chapter: Volume and Surface Area

If the volume of a sphere is divided by its surface area, the result is 27 cm. The radius of the sphere is
(a)9 cm
(b)36 cm
(c)54 cm
(d)81 cm
Answer
Answer (as printed): D
Explanation
$\frac{\frac{4}{3} \pi r^{3}}{4 \pi r^{2}}=27 \Rightarrow r=81 \mathrm{cm}$.

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