A certain type of TV has a base length of 40cm, a width of 35cm, and a height of 30cm. What is the minimum area of cloth needed to make a dust cover for a TV?
某种型号的电视机，底面长是40cm，宽是35cm，它的高是30cm．要给电视机做一个防尘罩，至少需要多大面积的布？
<gadget id="calculator">40 * 35</gadget>
<output>1_400</output>

<gadget id="calculator">40 * 30</gadget>
<output>1_200</output>

<gadget id="calculator">35 * 30</gadget>
<output>1_050</output>

<gadget id="calculator">1_200 + 1_050</gadget>
<output>2_250</output>

<gadget id="calculator">2_250 * 2</gadget>
<output>4_500</output>

<gadget id="calculator">1_400 + 4_500</gadget>
<output>5_900</output>

<result>5_900</result>