cuboid has a surface area of 156 square decimeters, a base area of 30 square decimeters, and a base perimeter of 32 decimeters. What is the volume of the cuboid?
一个长方体表面积是156平方分米，底面积是30平方分米，底面周长是32分米，长方体的体积是多少？
<gadget id="calculator">30 * 2</gadget>
<output>60</output>

<gadget id="calculator">156 - 60</gadget>
<output>96</output>

<gadget id="calculator">96 / 32</gadget>
<output>3</output>

<gadget id="calculator">30 * 3</gadget>
<output>90</output>

<result>90</result>