There is an approximate conical sand pile with a weight of 4.2 tons and a measured height of 1.5 meters, if the volume of each ton of sand is 0.6 cubic meters. How many square meters does this pile of sand cover?
有一个近似的圆锥形砂堆重4.2吨，测得高是1.5米，如果每吨沙的体积是0.6立方米．这堆沙的占地面积是多少平方米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">0.6 / (1/3) / 1.5</gadget>
<output>1.2</output>

<gadget id="calculator">4.2 * 1.2</gadget>
<output>5.04</output>

<result>5.04</result>