building has 4 large cylindrical columns that need to be painted. The perimeter of the bottom of the column is 3.5 meters, the height is 6.2 meters, and 0.2 kg of paint is required per square meter. How many kilograms of paint is needed in total?
某建筑物有4根圆柱形的大柱子要刷油漆．柱子的底面周长为3.5米，高为6.2米，每平方米需要油漆0.2千克．一共需要油漆多少千克？
<gadget id="calculator">3.5 * 6.2</gadget>
<output>21.7</output>

<gadget id="calculator">21.7 * 4</gadget>
<output>86.8</output>

<gadget id="calculator">86.8 * 0.2</gadget>
<output>17.36</output>

<result>17.36</result>