There is a rectangular vegetable field with a length of 10 decimeters and a width of 6 decimeters. One side is against a wall. A fence is built around it. How many decimeters is the minimum?
有一块长方形的菜地，长10分米，宽6分米，一面靠墙，在它的周围围上篱笆，至少要多少分米？
<gadget id="calculator">6 * 2</gadget>
<output>12</output>

<gadget id="calculator">10 + 12</gadget>
<output>22</output>

<result>22</result>