The circumference of the base of a cylinder is 94.2cm, and the height is 5cm. What is its lateral area in cm**2.
一个圆柱的底面周长是94.2cm，高是5cm，它的侧面积是多少cm**2．
<gadget id="calculator">94.2 * 5</gadget>
<output>471</output>

<result>471</result>