If two cubes with side lengths of 5 decimeters are put together to form a cuboid, the surface area of the resulting cuboid is reduced by how many square decimeters.
棱长是5分米的两个正方体拼成一个长方体，拼成的长方体的表面积比原来减少多少平方分米．
<gadget id="calculator">5 * 5 * 2</gadget>
<output>50</output>

<result>50</result>