The sum of the lengths of the sides of a cuboid is 48 cm, its length is 5 cm, its width is 4 cm, and its height is cm.
一个长方体的棱长总和是48cm，它的长是5cm，宽是4cm，高是多少cm．
<gadget id="calculator">48 / 4</gadget>
<output>12</output>

<gadget id="calculator">5 + 4</gadget>
<output>9</output>

<gadget id="calculator">12 - 9</gadget>
<output>3</output>

<result>3</result>