cone-shaped pile of sand has a base radius of 10 meters and a height of 3 meters. How many cubic meters is the pile of sand? (Write down the process of using the "analysis method" to analyze and solve problems.)
一个圆锥形沙堆，底面半径是10米，高是3米，这堆沙子有多少立方米？(写出用"分析法"分析问题、解决问题的过程．)
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">(1/3) * 3.14 * 100 * 3</gadget>
<output>314</output>

<result>314</result>