A cylinder has a surface area of 150.72 square centimeters and a base radius of 2 centimeters, find its volume.
一个圆柱的表面积是150.72平方厘米，底面半径是2厘米，求它的体积．
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4 * 2</gadget>
<output>25.12</output>

<gadget id="calculator">150.72 - 25.12</gadget>
<output>125.6</output>

<gadget id="calculator">2 * 3.14 * 2</gadget>
<output>12.56</output>

<gadget id="calculator">125.6 / 12.56</gadget>
<output>10</output>

<gadget id="calculator">3.14 * 4 * 10</gadget>
<output>125.6</output>

<result>125.6</result>