The diameter of the base of a cylinder is 0.5 meters and the height is 1.6 meters. What is its lateral area in square meters?
一个圆柱底面直径是0.5米，高1.6米，它的侧面积为多少平方米．
<gadget id="calculator">3.14 * 0.5 * 1.6</gadget>
<output>2.512</output>

<result>2.512</result>