The base of a cuboid is a square with a side length of 3cm and a height of 4dm. What is its surface area in cm**2.
一个长方体的底面是边长为3cm的正方形，高是4dm，它的表面积是多少cm**2．
<gadget id="calculator">3 * 3 * 2</gadget>
<output>18</output>

<gadget id="calculator">4 * 10</gadget>
<output>40</output>

<gadget id="calculator">40 * 3 * 4</gadget>
<output>480</output>

<gadget id="calculator">18 + 480</gadget>
<output>498</output>

<result>498</result>