A conical fertilizer pile has a circumference of 12.56 meters and a height of 1.8 meters. If 20 cubic meters of fertilizer is applied per hectare, how many hectares of land can this compost be applied?
一个圆锥体肥料堆，量得它的底面周长是12.56米，高1.8米．如果按每公顷土地施肥20立方米计算，这堆肥料可以施多少公顷的土地？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">12.56 / 3.14 / 2</gadget>
<output>2</output>

<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">(1/3) * 3.14 * 4 * 1.8</gadget>
<output>7.536</output>

<gadget id="calculator">7.536 / 20</gadget>
<output>0.3768</output>

<result>0.3768</result>