conical pile of fine sand has a bottom area of 2.4 square meters and a height of 0.9 meters. The fine sand weighs 1.7 tons per cubic meter. How many tons does this pile of sand weigh?
一堆圆锥形的细沙，底面积2.4平方米，高0.9米，细沙每立方米重1.7吨，这堆沙重多少吨？
<result>1.244</result>