The side length of a cube is 2 centimeters, what is its surface area in square centimetres?
正方体的棱长是2厘米，它的表面积是多少平方厘米
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">6 * 4</gadget>
<output>24</output>

<result>24</result>