A cylinder with a height of 6 decimeters is cut in half along the diameter of the base, and its surface area is increased by 24 square decimeters. What is the volume of this cylinder in cubic decimeters?
一个高6分米的圆柱，沿底面直径把它切成两半，它的表面积增加24平方分米，这个圆柱体的是体积是多少立方分米．
<gadget id="calculator">24 / 2 / 6</gadget>
<output>2</output>

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

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

<gadget id="calculator">3.14 * 1 * 6</gadget>
<output>18.84</output>

<result>18.84</result>