On a map with a scale of 1:55, the area of a rectangular grass is 20 square centimeters. What is the actual area of this rectangular grass in square meters?
在一幅比例尺为1：55的地图上，一块长方形草地的面积是20平方厘米，这块长方形草地的实际面积是多少平方米．
<result>6.05</result>