The volume of a cone is 6.28 cubic centimeters, and how many more cubic centimeters can be added to make a cylinder with its base and height.
一个圆锥体的体积是6.28立方厘米，再增加多少立方厘米就能做成一个与它等底等高的圆柱体．
<gadget id="calculator">6.28 * 2</gadget>
<output>12.56</output>

<result>12.56</result>