A cuboid with a length of 10dm, a width of 4dm and a height of 2dm is surrounded by a piece of iron wire. What is the length of the wire in dm?
用一根铁丝围成一个长10dm，宽4dm，高2dm的长方体，这根铁丝长多少dm．
<gadget id="calculator">10 + 4 + 2</gadget>
<output>16</output>

<gadget id="calculator">16 * 4</gadget>
<output>64</output>

<result>64</result>