The height of a cylinder is 6cm, the diameter of the bottom is 5cm, what is its lateral area in cm**2.
一个圆柱的高是6cm，底面直径是5cm，它的侧面积是多少cm**2．
<gadget id="calculator">3.14 * 5 * 6</gadget>
<output>94.2</output>

<result>94.2</result>