cuboid room is 5.2 meters long, 3 meters wide, and 2.6 meters high. The lower part of its four walls is painted with 1.1-meter-high paint. How many square meters is the painted area? (1 square meter of door opening is not painted)
一个长方体房间，长5.2米，宽3米，高2.6米，它的四面墙的下部都涂了1.1米高的油漆，涂油漆的面积有多少平方米？(开门处1平方米不涂)
<gadget id="calculator">5.2 * 1.1 * 2</gadget>
<output>11.44</output>

<gadget id="calculator">3 * 1.1 * 2</gadget>
<output>6.6</output>

<gadget id="calculator">6.6 - 1</gadget>
<output>5.6</output>

<gadget id="calculator">11.44 + 5.6</gadget>
<output>17.04</output>

<result>17.04</result>