The water pipe used for running water outside the building is a cuboid, and the cross section is a rectangle with a length of 1 decimeter and a width of 0.6 decimeter. If each section is 1.5 meters long, how many square decimeters of iron sheets are used to make a section of such a water pipe.
楼房外用于流水的水管是长方体，横截面是一个长1分米，宽0.6分米的长方形，如果每节长1.5米，做一节这样的水管至少用铁皮多少平方分米．
<gadget id="calculator">1.5 * 10</gadget>
<output>15</output>

<gadget id="calculator">1 * 15</gadget>
<output>15</output>

<gadget id="calculator">0.6 * 15</gadget>
<output>9</output>

<gadget id="calculator">15 + 9</gadget>
<output>24</output>

<gadget id="calculator">24 * 2</gadget>
<output>48</output>

<result>48</result>