On the construction site there is a pile of sand that resembles a cone. The radius of the bottom surface is 3 meters, the height is 2.5 meters, and the weight of each cubic sand is 2.4 tons. How many tons does this pile of sand weigh?
建筑工地上有一个近似圆锥体的沙堆，底面半径是3米，高是2.5米，每立方沙重2.4吨，这堆沙大约重多少吨？
<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 * 2.5</gadget>
<output>23.55</output>

<gadget id="calculator">23.55 * 2.4</gadget>
<output>56.52</output>

<result>56.52</result>