A conical sand pile covers an area of 15 square meters, is 2 meters high, and weighs 1.7 tons per cubic meter of sand. How many tons does this pile of sand weigh in total?
一个圆锥形沙堆，占地面积为15平方米，高为2米，每立方米沙重1.7吨，这堆沙一共重多少吨？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/3) * 15 * 2 * 1.7</gadget>
<output>17</output>

<result>17</result>