There is a conical grain pile, the circumference of the bottom is 12.56m, and the height is 3m. If this pile of grain is put into a cylindrical granary with a bottom radius of 1m, how much is the height of the cylindrical grain pile?
有一个圆锥形粮堆，底面周长是12.56m，高3m，如果把这堆粮食装入一个底面半径为1m的圆柱形粮仓中，圆柱形粮堆高多少米？
<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 ** 2</gadget>
<output>1</output>

<gadget id="calculator">3.14 * 1</gadget>
<output>3.14</output>

<gadget id="calculator">3 / 3.14</gadget>
<output>0.955414</output>

<gadget id="calculator">(1/3) * 3.14 * 4 * 0.955414</gadget>
<output>4</output>

<result>4</result>