The sum of the sides of a cube is 120 cm. What is the surface area in square centimetres.
一个正方体的棱长和是120厘米．表面积是多少平方厘米．
<gadget id="calculator">120 / 12</gadget>
<output>10</output>

<gadget id="calculator">10 * 10 * 6</gadget>
<output>600</output>

<result>600</result>