There is a large circular flower bed with a diameter of 8m on the Oriental Plaza, and there is a circular cement pavement with a width of 2m around it. What is the area of the road?
东方广场上有一个直径是8m的圆形的大花坛，它的周围有一条2m宽的环形水泥路面．路面的面积是多少？
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 + 2</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">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">3.14 * 16</gadget>
<output>50.24</output>

<gadget id="calculator">113.04 - 50.24</gadget>
<output>62.8</output>

<result>62.8</result>