A cube of wood has a surface area of 90 square centimeters. If it is sawed into two pieces, two identical cubes can be obtained. Find the volume of the log.
一块正方体木料，表面积是90平方厘米，把它锯成两段，可以得到两个完全一样的正方体，求原木料的体积．
<gadget id="calculator">3 * 3 * 3 * 2</gadget>
<output>54</output>

<result>54</result>