A conical pile of sand covers an area of 30 square meters and is 2.5 meters high. If each cubic meter of sand weighs 1.7 tons, how many tons does the pile of sand weigh?
一个圆锥形的沙堆，占地面积是30平方米，高是2.5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">(1/3) * 30 * 2.5 * 1.7</gadget>
<output>42.5</output>

<result>42.5</result>