The lateral area of a cylinder is 125.6 square centimeters, and the height is 4 centimeters. What is the area of one of its bases?
一个圆柱的侧面积是125.6平方厘米，高是4厘米，它的一个底面的面积是多少？
<gadget id="calculator">125.6 / 4</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</gadget>
<output>78.5</output>

<result>78.5</result>