A circular pool with a diameter of 14m is surrounded by a circular path with a width of 1m. What is the area of the path?
一个直径为14m的圆形水池，周围有一条宽1m的环形小路，小路的面积是多少？
<gadget id="calculator">14 / 2</gadget>
<output>7</output>

<gadget id="calculator">7 + 1</gadget>
<output>8</output>

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

<gadget id="calculator">7 ** 2</gadget>
<output>49</output>

<gadget id="calculator">64 - 49</gadget>
<output>15</output>

<gadget id="calculator">3.14 * 15</gadget>
<output>47.1</output>

<result>47.1</result>