The circumference of the bottom surface of a cylinder is 25.12 cm and the height is 10 cm
25.12 △ 3.14 △ 2 = 4 (CM); 25.12 × 10 + 3.14 × 42 × 2 = 251.2 + 3.14 × 32 = 251.2 + 100.48, = 351.68 (cm 2); 3.14 × 42 × 10 = 3.14 × 160 = 502.4 (cm 3). A: the surface area of this cylinder is 351.68 cm 2, and the volume is 502.4 cm 3
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