A cuboid whose base area is a square has a perimeter of 24 cm and a height of 15 cm, what is its surface area in square centimeters?
一个底面积是正方形的长方体，它的底面周长是24厘米，高是15厘米，它的表面积是多少平方厘米．
<gadget id="calculator">24 / 4</gadget>
<output>6</output>

<gadget id="calculator">6 * 6</gadget>
<output>36</output>

<gadget id="calculator">6 * 15</gadget>
<output>90</output>

<gadget id="calculator">36 + 90 + 90</gadget>
<output>216</output>

<gadget id="calculator">216 * 2</gadget>
<output>432</output>

<result>432</result>