There are 4 identical cylindrical concrete pillars in the front hall of the movie theater. The perimeter of the bottom surface is 0.942 meters and the height is 5 meters. Now these 4 cement pillars should be painted with paint. What is the area to be painted?
影剧院的前厅有4根完全相同的圆柱体水泥柱，底面周长是0.942米，高是5米，现在要把这4根水泥柱刷上油漆，刷油漆的面积是多少平方米．
<gadget id="calculator">0.942 * 5 * 4</gadget>
<output>18.84</output>

<result>18.84</result>