A cylinder has a lateral area of 62.8cm**2 and a base radius of 2cm. What is the volume of this cylinder in cm**3.
一个圆柱的侧面积是62.8cm**2，底面半径2cm．这个圆柱的体积是多少cm**3．
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4</gadget>
<output>12.56</output>

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

<gadget id="calculator">62.8 / 12.56</gadget>
<output>5</output>

<gadget id="calculator">12.56 * 5</gadget>
<output>62.8</output>

<result>62.8</result>