The radius of a circular fish pond is 5 meters, and a lawn with a width of 1 meter should be spread around the periphery of the fish pond. What is the area of the lawn?
一个圆形鱼池的半径是5米，要绕着鱼池的外围铺上宽1米的草坪，草坪的面积是多少？
<gadget id="calculator">5 + 1</gadget>
<output>6</output>

<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">36 - 25</gadget>
<output>11</output>

<gadget id="calculator">3.14 * 11</gadget>
<output>34.54</output>

<result>34.54</result>