The lateral expansion of a cylinder is a square. The height of this cylinder is 12.56 cm. What is its volume in cubic centimeters?
一个圆柱的侧面展开是一个正方形，这个圆柱的高是12.56厘米，它的体积是多少立方厘米．
<gadget id="calculator">12.56 / 3.14 / 2</gadget>
<output>2</output>

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

<gadget id="calculator">3.14 * 4 * 12.56</gadget>
<output>157.7536</output>

<result>157.7536</result>