cuboid has a surface area of 4000 square centimeters. Cut this cuboid into two equal pieces to form two cuboids with the same surface area. If these two cuboids are joined together to form a new cuboid, what is the maximum surface area of the new cuboid?
一个长方体表面积是4000平方厘米，把这个长方体平均切成两块正好是两个表面积相等的长方体，若又把这两个长方体拼成一个新的长方体，这个新的长方体的表面积最多是多少？
<gadget id="calculator">4_000 * 2</gadget>
<output>8_000</output>

<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<gadget id="calculator">8 + 2</gadget>
<output>10</output>

<gadget id="calculator">4_000 / 10</gadget>
<output>400</output>

<gadget id="calculator">400 * 2</gadget>
<output>800</output>

<gadget id="calculator">8_000 - 800</gadget>
<output>7_200</output>

<result>7_200</result>