The sum of the sides of a cuboid is 28 decimeters. It is known that the base is a square with a side length of 2 decimeters. What is the height of the cuboid in decimeters?
一个长方体的棱长总和是28分米，已知底面是边长2分米的正方形，长方体的高是多少分米．
<gadget id="calculator">2 * 8</gadget>
<output>16</output>

<gadget id="calculator">28 - 16</gadget>
<output>12</output>

<gadget id="calculator">12 / 4</gadget>
<output>3</output>

<result>3</result>