A cone-shaped pile of sand has a base radius of 3m and a height of 2.4m. How many meters can this pile of sand be used to pave a 2cm-thick road on a 10m-wide road?
一个圆锥形沙堆，底面半径是3m，高是2.4m，用这堆沙在10m宽的公路上铺2cm厚的路面，能铺多少米？
<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 * 2.4</gadget>
<output>22.608</output>

<gadget id="calculator">10 * 0.02</gadget>
<output>0.2</output>

<gadget id="calculator">22.608 / 0.2</gadget>
<output>113.04</output>

<result>113.04</result>