A rectangular land with a length of 16.5 meters. After drawing the largest square, the remaining part is surrounded by fences to raise flower seedlings. How long is the fence in meters.
一块长方形地，长16.5米，划出一个最大的正方形后，剩余部分围上篱笆育花苗．篱笆长多少米．
<gadget id="calculator">16.5 + 16.5</gadget>
<output>33</output>

<result>33</result>