The compartment of a truck is a cuboid filled with sand. Measured from the inside, the length of the compartment is 6 meters, the width is 1.5 meters, and the height is 3 meters. After unloading, pile the sand into an approximate conical sand pile with a height of 2 meters. How many square meters is the bottom area of the sand pile?
一辆货车的车厢是一个长方体，里面装满沙子，从里面量，车厢的长是6米，宽是1.5米，高是3米．卸下后把沙子堆成一个高2米的近似的圆锥沙堆，这个沙堆的底面积是多少平方米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">3 / (1/3) / 2</gadget>
<output>9/2 = around 4.5</output>

<gadget id="calculator">6 * 1.5 * (9/2)</gadget>
<output>40.5</output>

<result>40.5</result>