A cylinder has a height of 8 cm and a lateral area of 251.2 cm2, what is its volume?
一个圆柱的高是8厘米，侧面积是251.2平方厘米，它的体积是多少？
<gadget id="calculator">251.2 / 8</gadget>
<output>31.4</output>

<gadget id="calculator">31.4 / 3.14 / 2</gadget>
<output>5</output>

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">3.14 * 25 * 8</gadget>
<output>628</output>

<result>628</result>