The radius of a circular flower bed is 5 meters. Now it is necessary to expand the flower bed and increase the radius by 1 meter. At this time, how many square meters does the floor area of the flower bed increase?
一个圆形花坛的半径是5米，现在要扩建花坛，将半径增加1米，这时花坛的占地面积增加了多少平方米？
<gadget id="calculator">5 + 1</gadget>
<output>6</output>

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

<gadget id="calculator">3.14 * 36</gadget>
<output>113.04</output>

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

<gadget id="calculator">3.14 * 25</gadget>
<output>78.5</output>

<gadget id="calculator">113.04 - 78.5</gadget>
<output>34.54</output>

<result>34.54</result>