A conical sand pile has a bottom area of 16 square meters and a height of 2.4 meters. If each cubic meter of sand weighs 1.7 tons, how many tons does this pile of sand weigh?
一个圆锥形沙堆，底面积是16平方米，高是2.4米，如果每立方米沙重1.7吨，这堆沙重多少吨？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">16 * 2.4 * (1/3) * 1.7</gadget>
<output>21.76</output>

<result>21.76</result>