The surface area of a cylinder is 314 square centimeters. The bottom radius of the cylinder is 3 / 1 of the height. What is the side area of the cylinder?

If the height is x cm, the radius of the bottom is 1 / 3x cm,
3.14×(1/3x)²×2+3.14×1/3x×2×x=314
The solution is X & # 178; = 225 / 2 = 112.5, so the side area of the cylinder is 3.14 × 1 / 3x × 2 × x = 235.5 square centimeter

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