Two cubes of the same size form a new cuboid with a surface area of 40 square centimeters, what is the surface area of a cube in square centimeters
二个同样大小的正方体，组成一个新长方体，表面积是40平方厘米，求一个正方体的表面积多少平方厘米
<gadget id="calculator">6 * 4</gadget>
<output>24</output>

<result>24</result>