Dividing a cuboid with a square base into two identical cubes increases the surface area by 50 cm2. What is the surface area of the original cuboid in square centimeters?
将一个底面是正方形的长方体分成两个完全一样的正方体，表面积会增加50平方厘米．原来长方体的表面积是多少平方厘米．
<gadget id="calculator">25 * 10</gadget>
<output>250</output>

<result>250</result>