The circumference of the base of a cylinder is 6.28 meters and the height is 0.5 meters. What is the lateral area of the cylinder in square meters?
一个圆柱的底面周长是6.28米，高是0.5米，这个圆柱的侧面积是多少平方米．
<gadget id="calculator">6.28 * 0.5</gadget>
<output>3.14</output>

<result>3.14</result>