A cylindrical piece of wood with a height of 10 cm is cut into the largest cone. The volume of the cut part is 120 cubic centimeters. What is the area of the bottom of the cone in square centimeters?
把一根高10厘米圆柱形木料，削成一个最大的圆锥体，削去部分的体积是120立方厘米，这块圆锥体木料的底面积是多少平方厘米．
<gadget id="calculator">120 / 2</gadget>
<output>60</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">60 * (3/10)</gadget>
<output>18</output>

<result>18</result>