The area of the upper surface of a cuboid is 10 square centimeters, the area of the front surface is 8 square centimeters, and the area of the right surface is 6 square centimeters. What is its surface area in square centimeters?
一个长方体上表面的面积是10平方厘米，前表面的面积是8平方厘米，右表面的面积是6平方厘米，它的表面积是多少平方厘米．
<gadget id="calculator">10 + 8 + 6</gadget>
<output>24</output>

<gadget id="calculator">24 * 2</gadget>
<output>48</output>

<result>48</result>