There is a circular flowerbed with a diameter of 16 meters in the park, surrounded by a 2-meter-wide walkway. Now the aisle is also changed into a flower garden, how many square meters has the area of the flower garden increased?
公园里有一个直径为16米的圆形花圃，在它的周围环绕着一条2米宽的走道．现将走道也改成花圃，花圃的面积增加了多少平方米？
<gadget id="calculator">16 / 2</gadget>
<output>8</output>

<gadget id="calculator">8 + 2</gadget>
<output>10</output>

<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">8 ** 2</gadget>
<output>64</output>

<gadget id="calculator">100 - 64</gadget>
<output>36</output>

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

<result>113.04</result>