There is an approximately conical sand pile weighing about 30 tons, and the measured height is 1.5 meters. If the volume of each ton of sand is 0.6 cubic meters. What is the area of the bottom of this pile of sand?
有一个近似圆锥形的砂堆约重30吨，测得高是1.5米，如果每吨砂的体积是0.6立方米．这堆砂的底面积是多少平方米？
<gadget id="calculator">3 / 1.5</gadget>
<output>2</output>

<gadget id="calculator">30 * 0.6 * 2</gadget>
<output>36</output>

<result>36</result>