There is a circular flower bed with a diameter of 8 meters. There is a path around the flower bed with a width of 2 meters. What is the area of this path in square meters?
一个圆形花坛，直径为8米，绕花坛有一条小路，宽2米，这条小路的面积是多少平方米．
<result>28.26</result>