There are two cylinders with a volume ratio of 5:8, and the expanded diagrams of their sides are the same rectangle, if the length and width of the rectangle are increased at the same time 6. Its area has increased by 114. So what is the area of this rectangle?
有两个体积之比为5：8的圆柱，它们的侧面的展开图为相同的长方形，如果把该长方形的长和宽同时增加6．其面积增加了114．那么这个长方形的面积多少．
<gadget id="calculator">5 * 8</gadget>
<output>40</output>

<result>40</result>