A cylindrical tin can with a bottom circumference of 54 cm and a height of 5 cm. Stick a trademark on its side, and the width of the overlapping part is 2cm. What is the size of the trademark.
一种圆柱形铁皮罐头，底面周长54cm，高5cm．在它的侧面贴上商标，重叠部分的宽度是2cm．商标的面积是多少．
<gadget id="calculator">54 + 2</gadget>
<output>56</output>

<gadget id="calculator">56 * 5</gadget>
<output>280</output>

<result>280</result>