A rectangular wire frame with a length of 5 cm, a width of 4 cm, and a height of 3 cm is converted into a wire frame of a cube. What is the length of the sides of the cube in cm?
把一个长5厘米，宽4厘米、高3厘米的长方体铁丝框，改装成一个正方体铁丝框，这个正方体的棱长是多少厘米？
<gadget id="calculator">5 + 4 + 3</gadget>
<output>12</output>

<gadget id="calculator">4 / 12</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">12 * (1/3)</gadget>
<output>4</output>

<result>4</result>