There are 8 cylindrical columns of the same size in the workshop of Jinyang Garment Factory. The circumference of each column is 18 decimeters and the height is 5 meters. Now it is necessary to paint each pillar. How many square meters are the painted areas?
锦阳服装厂厂房有8根同样大小的圆柱形柱子，每根柱子的底面周长是18分米，高5米．现要给每根柱子刷上油漆，刷油漆的面积共有多少平方米？
<gadget id="calculator">18 / 10</gadget>
<output>9/5 = around 1.8</output>

<gadget id="calculator">(9/5) * 5 * 8</gadget>
<output>72</output>

<result>72</result>