If the two sides of a triangle are 4 decimeters and 6 decimeters respectively, then the third side must be shorter than how many decimeters.
一个三角形的两条边长分别是4分米，6分米，那么第3条边一定比多少分米短．
<gadget id="calculator">6 + 4</gadget>
<output>10</output>

<result>10</result>