If two equal cubes with a base area of 15 square centimeters are put together to form a cuboid, what is the surface area of the cuboid?
把底面积15平方厘米的两个相等的正方体拼成一个长方体，这个长方体的表面积是多少平方厘米．
<gadget id="calculator">15 * 10</gadget>
<output>150</output>

<result>150</result>