conical sand pile has a bottom area of 12.56 square meters and a height of 1.2 meters. It can just fill a cuboid bunker with a depth of 0.4 meters. How many square meters is the bottom area of this bunker?
一个圆锥形沙堆，底面积是12.56平方米，高1.2米．正好可以填满一个0.4米深的长方体沙坑，这个沙坑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">(1/3) * 12.56 * 1.2</gadget>
<output>5.024</output>

<gadget id="calculator">5.024 / 0.4</gadget>
<output>12.56</output>

<result>12.56</result>