There is a cuboid whose base is square and whose height is twice the side length of the square at the base. It is also known that the surface area of the cuboid is 360 square centimeters. What is the height of the cuboid in centimeters?
有一个长方体的底是正方形，高是底面正方形边长的2倍，又知长方体的表面积是360平方厘米，那么这个长方体的高是多少厘米．
<gadget id="calculator">2 * 6</gadget>
<output>12</output>

<result>12</result>