There are 10 cylindrical pillars with a base diameter of 2 meters and a height of 6 meters in a conference hall. Now they need to be painted with 0.5 kilograms of paint per square meter. How many kilograms of paint should be used to paint these pillars?
一个会议大厅里有10根底面直径是2米，高是6米的圆柱形柱子，现在要刷上油漆，每平方米用油漆0.5千克，刷这些柱子要用油漆多少千克？
<gadget id="calculator">3.14 * 2 * 6 * 10 * 0.5</gadget>
<output>188.4</output>

<result>188.4</result>