Mensurationmedium · Past Paper
What is the surface area of a sphere whose volume is 4.5π cubic units?
A9π sq. units
B4.5π sq. units
C18π sq. units
D6π sq. units
✓ Correct Answer: A — 9π sq. units
4/3πr³ = 4.5π => r³ = 3.375 => r = 1.5. Area = 4π(1.5)² = 4π * 2.25 = 9π sq. units.
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