matchbox in the shape of a cuboid measures 5 cm in length, 4 cm in width, and 1 cm in height. How many square centimeters of cardboard are needed to make the matchbox?
一个长方体形状的火柴盒，测得它的长是5厘米，宽是4厘米，高是1厘米，则制作这个火柴盒共要多少平方厘米的硬纸板？
<gadget id="calculator">5 * 4</gadget>
<output>20</output>

<gadget id="calculator">5 * 1 * 2</gadget>
<output>10</output>

<gadget id="calculator">4 * 1 * 2</gadget>
<output>8</output>

<gadget id="calculator">20 + 10 + 8</gadget>
<output>38</output>

<gadget id="calculator">5 * 4 * 2</gadget>
<output>40</output>

<gadget id="calculator">40 + 10</gadget>
<output>50</output>

<gadget id="calculator">38 + 50</gadget>
<output>88</output>

<result>88</result>