A cylinder and a cone have the same base and height, their volumes differ by 3.14 cubic centimeters, what is the sum of their volumes in cubic centimeters
一个圆柱和一个圆锥等底等高，它们的体积相差3.14立方厘米，它们的体积的和是多少立方厘米
<gadget id="calculator">3.14 / 2</gadget>
<output>1.57</output>

<gadget id="calculator">1.57 * 4</gadget>
<output>6.28</output>

<result>6.28</result>