Mensurationhard · Past Paper
Find the total surface area of a hemisphere if its volume is 18π cubic cm.
A27π sq. cm
B18π sq. cm
C36π sq. cm
D54π sq. cm
✓ Correct Answer: A — 27π sq. cm
2/3πr³ = 18π => r³ = 27 => r = 3. TSA = 3πr² = 3π(9) = 27π sq. cm.
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