If the volume of a sphere is divided by its surface area, the result is 54 cm. The radius of the sphere is:
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Correct answer: D
Explanation
The correct answer is option 4 i.e 162 cm.
Volume of sphere = (4/3) π r³
Surface area = 4 π r²
Ratio = (4/3 π r³) ÷ (4 π r²) = r/3
Given r/3 = 54 → r = 162 cm