A cylinder and a cone have the same base area. The height of the cylinder is 6.28 centimeters. The sides are square. The height of the cone is 12 centimeters. What is the volume of the cone in cubic centimeters?
一个圆柱和一个圆锥的底面积相等，圆柱高6.28厘米，侧面展开是正方形，圆锥高12厘米，圆锥的体积是多少立方厘米．
<gadget id="calculator">6.28 / 3.14 / 2</gadget>
<output>1</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">(1/3) * 3.14 * 1 * 12</gadget>
<output>12.56</output>

<result>12.56</result>