A batch of wheat is piled up to resemble a cone. The circumference of the bottom surface is 25.12 meters and the height is 3 meters. Put these wheats in a cylindrical grain storehouse with a diameter of 4 meters at the bottom. At this time, the height of the wheat in the grain storehouse is only The height of the store (4/5), how many meters is the height of this grain store? (Retain one decimal place.)
一批小麦堆成近似于圆锥体，量得底面周长是25.12米，高3米，把这些小麦装在一个底面直径是4米的圆柱形粮囤里，这时粮囤里小麦高度只是粮囤高度的(4/5)，这个粮囤的高度大约是多少米？(得数保留一位小数．)
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">25.12 / 3.14 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

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

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

<gadget id="calculator">3.14 * 4</gadget>
<output>12.56</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">3 / 12.56 / (4/5)</gadget>
<output>0.298567</output>

<gadget id="calculator">(1/3) * 3.14 * 16 * 0.298567</gadget>
<output>5.000002</output>

<result>5.000002</result>