A cylinder with a height of 5cm, if its height increases by 1cm, its surface area will increase by 56.52cm**2. What is the lateral area of this cylinder in cm**2?
一个高为5cm的圆柱，如果它的高增加1cm，则表面积就增加56.52cm**2，这个圆柱的侧面积是多少cm**2．
<gadget id="calculator">56.52 / 1</gadget>
<output>56.52</output>

<gadget id="calculator">56.52 * 5</gadget>
<output>282.6</output>

<result>282.6</result>