A pile of concrete is conical, with a bottom area of 28.26 square meters and a height of 2.5 meters. How many meters can be paved with this pile of concrete on a 15-meter-wide road with a thickness of 4 cm?
一堆混凝土呈圆锥形，底面积是28.26平方米，高是2.5米，用这堆混凝土在15米宽的公路上铺4厘米厚的路面，能铺多少米？
<result>39.25</result>