The two sides of a triangle are 6 decimeters and 4 decimeters respectively, and the third side must be shorter than how many decimeters.
一个三角形的两条边长分别是6分米、4分米第三条边一定比多少分米短．
<gadget id="calculator">6 + 4</gadget>
<output>10</output>

<result>10</result>