A cylinder, bottom diameter 18 cm, height 15 cm, surface area~

Radius = 18 △ 2 = 9 cm
Bottom area = 3.14 × 9 × 9 = 254.34 square cm
Side area = 3.14 × 18 × 15 = 847.8 square centimeter
Surface area = 847.8 + 254.34 × 2 = 1356.48 square cm
If you understand and solve your problem,

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