The perimeter of the bottom of a cuboid can is 35cm, and the height is 12cm. Label paper is pasted around the box. What is the area on which the label paper is pasted?
长方体罐头盒底面周长35cm，高12cm，在盒的四周贴商标纸，贴商标纸的面积为多少．
<gadget id="calculator">35 * 12</gadget>
<output>420</output>

<result>420</result>