A cylindrical well was dug in Lijiazhuang. The depth of the well below the ground was 10m, and the diameter of the bottom surface was 1m. How many cubic meters of soil were excavated?
李家庄挖了一口圆柱形水井，地面以下的井深10m，底面直径为1m，挖出的土有多少立方米？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) ** 2</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">3.14 * (1/4) * 10</gadget>
<output>7.85</output>

<result>7.85</result>