If the sum of the sides of a cube is 72 cm, what is its surface area
一个正方体的棱长之和是72cm，则它的表面积是多少
<gadget id="calculator">72 / 12</gadget>
<output>6</output>

<gadget id="calculator">6 * 6 * 6</gadget>
<output>216</output>

<result>216</result>