A cylinder and a cone with the same base and height have a volume difference of 12.56 cubic meters. What is the volume of the cone in cubic meters?
等底等高的圆柱和圆锥，它们的体积相差12.56立方米，圆锥的体积是多少立方米．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">12.56 / 2</gadget>
<output>6.28</output>

<result>6.28</result>