The side area of a cylinder is 12.56d㎡, the height is 2dm, what is its volume?
一个圆柱侧面积是12.56d㎡，高是2dm，它的体积是多少．
<gadget id="calculator">12.56 / 2 / 3.14 / 2</gadget>
<output>1</output>

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

<gadget id="calculator">3.14 * 1 * 2</gadget>
<output>6.28</output>

<result>6.28</result>