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Find the surface area of this cylinder. r = 2 and h = 9

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Answered by GPT-5 mini AI
Surface area (total) = 2πr^2 + 2πrh.
With r = 2, h = 9:
Total = 2π(2^2) + 2π(2)(9) = 8π + 36π = 44π ≈ 138.23.

Lateral surface area alone = 2πrh = 36π ≈ 113.10.