The height of a cylinder is 0.8 decimeters. If the height increases by 4 centimeters, its surface area increases by 75.36 square centimeters. What is the volume of this cylinder in cubic centimeters?
一个圆柱的高是0.8分米，如果高增加4厘米，它的表面积增加75.36平方厘米，这个圆柱的体积是多少立方厘米？
<gadget id="calculator">75.36 / 4 / 3.14 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">0.8 * 10</gadget>
<output>8</output>

<gadget id="calculator">8 + 4</gadget>
<output>12</output>

<gadget id="calculator">3.14 * 9 * 12</gadget>
<output>339.12</output>

<result>339.12</result>