cylinder is formed by paper with a length of 8 cm and a width of 3 cm. What is the lateral area of the cylinder in cm**2.
用长8cm，宽3cm的纸围成一个圆柱，这个圆柱侧面积是多少cm**2．
<gadget id="calculator">8 * 3</gadget>
<output>24</output>

<result>24</result>