The circumference of the base of a cylinder is 9.42 cm and the height is 3 cm. What is the lateral area of the cylinder in square centimeters?
一个圆柱的底面周长是9.42厘米，高是3厘米，这个圆柱体的侧面积是多少平方厘米．
<gadget id="calculator">9.42 * 3</gadget>
<output>28.26</output>

<result>28.26</result>