A cylinder with a base diameter of 0.5 meters and a height of 1.8 meters is what is its lateral area in square meters?
一个圆柱底面直径是0.5米，高1.8米，它的侧面积为多少平方米．
<gadget id="calculator">3.14 * 0.5 * 1.8</gadget>
<output>2.826</output>

<result>2.826</result>