A cylinder of radius 3 cm has a volume of . What is its total surface area including both circular bases?
Answer and explanation
Correct answer: D.
- Step 1: Volume formula: .
- Step 2: Solve for height: .
- Step 3: Lateral surface area: .
- Step 4: Base areas: .
- Step 5: Total surface area: .
Answer
66pi cm^2.
Why not the others: '' is lateral area only; '' includes only one base.
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