cuboid becomes a cube if its height is reduced by 2 centimeters, and its surface area is reduced by 40 square centimeters. What is the volume of this cuboid in cubic centimeters?
一个长方体，如果高减少2厘米，就成为一个正方体，而且表面积要减少40平方厘米，原来这个长方体的体积是多少立方厘米．
<gadget id="calculator">40 / 2 / 4</gadget>
<output>5</output>

<gadget id="calculator">5 + 2</gadget>
<output>7</output>

<gadget id="calculator">5 * 5 * 7</gadget>
<output>175</output>

<result>175</result>