In the living room of Aunt Wang’s house, there is a cuboid-shaped cabinet air conditioner, 0.4 meters long, 0.2 meters wide, and 1.7 meters high. In order to prevent dust, she plans to make a cuboid-shaped cover with cloth to cover the air conditioner. , at least how many square meters of cloth do you need to make this cover? (The cloth at the joint is ignored)
王阿姨家的客厅摆放着一台长方体状的柜式空调，长0.4米，宽0.2米，高1.7米，为了防灰尘，她准备用布做一只长方体形状的套子把这只空调罩起来，做这只套子至少需用多少平方米的布？(接头处用布忽略不计)
<gadget id="calculator">0.4 * 0.2</gadget>
<output>0.08</output>

<gadget id="calculator">0.4 * 1.7</gadget>
<output>0.68</output>

<gadget id="calculator">0.2 * 1.7</gadget>
<output>0.34</output>

<gadget id="calculator">0.68 + 0.34</gadget>
<output>1.02</output>

<gadget id="calculator">1.02 * 2</gadget>
<output>2.04</output>

<gadget id="calculator">0.08 + 2.04</gadget>
<output>2.12</output>

<result>2.12</result>