The sum of the sides of a cuboid and a cube are equal, and the length, width and height of the cuboid are 6cm, 5cm and 4cm respectively, so how many centimeters is the side length of the cube? Are they the same size? If not the same, whose volume is larger?
一个长方体和一个正方体棱长总和相等，已知长方体的长、宽、高分别是6cm、5cm、4cm，那么正方体的棱长是多少cm？它们的体积一样吗？如果不一样，谁的体积大？
<gadget id="calculator">6 + 5 + 4</gadget>
<output>15</output>

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

<gadget id="calculator">15 * (1/3)</gadget>
<output>5</output>

<result>5</result>