If the length of a cuboid is 6 cm, the width is 4 cm, and the height is half the length, what is its surface area in square centimeters?
一个长方体的长是6厘米，宽是4厘米，高是长的一半，它的表面积是多少平方厘米．
<gadget id="calculator">6 * 4</gadget>
<output>24</output>

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">6 * 3</gadget>
<output>18</output>

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

<gadget id="calculator">24 + 18 + 12</gadget>
<output>54</output>

<gadget id="calculator">54 * 2</gadget>
<output>108</output>

<result>108</result>