Xiaolin made a cage for an injured bird. He first surrounded it with wire to form a cage 5 decimeters long and 4 decimeters wide. For a frame with a height of 6 decimeters, at least how many decimeters of iron wire are needed.
小林给一只受伤的小鸟做一个笼子，他先用铁丝围成了一个长5分米，宽4分米．高6分米的框架，至少需要铁丝多少分米．
<gadget id="calculator">5 + 4 + 6</gadget>
<output>15</output>

<gadget id="calculator">15 * 4</gadget>
<output>60</output>

<result>60</result>