A conical sand pile is 3 meters high, the bottom circumference is 18.84 meters, and the sand weighs about 1.7 tons per cubic meter. How many tons does this pile of sand weigh?
一个圆锥形沙堆，高3米，底面周长是18.84米，每立方米沙约重1.7吨．这堆沙约重多少吨？
<gadget id="calculator">2 * 3.14</gadget>
<output>6.28</output>

<gadget id="calculator">18.84 / 6.28</gadget>
<output>3</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">(1/3) * 3.14 * 9 * 3 * 1.7</gadget>
<output>48.042</output>

<result>48.042</result>