The lateral area of a cylinder is 10 square decimeters, and the circumference of the base is 12.56 decimeters. What is its volume?
圆柱的侧面积是10平方分米，底面周长是12.56分米，它的体积是多少？
<gadget id="calculator">12.56 / 3.14 / 2</gadget>
<output>2</output>

<gadget id="calculator">2 / 2</gadget>
<output>1</output>

<gadget id="calculator">10 * 1</gadget>
<output>10</output>

<result>10</result>