A cylinder has a ground diameter of 1 meter and a height of 10 decimeters, what is its lateral area in square decimeters?
一根圆柱的地面直径是1米，高是10分米，它的侧面积是多少平方分米．
<gadget id="calculator">3.14 * 1 * 10 * 1 * 10</gadget>
<output>314</output>

<result>314</result>