If the side length of a cube is 0.6 decimeters, what is the surface area in square decimeters?
正方体的棱长是0.6分米，表面积是多少平方分米．
<gadget id="calculator">0.6 * 10</gadget>
<output>6</output>

<gadget id="calculator">0.6 * 0.6 * 6</gadget>
<output>2.16</output>

<result>2.16</result>