A cuboid aluminum ingot with a length of 15 cm, a width of 6 cm, and a height of 5 cm, and another cube of aluminum ingot with a side length of 4 cm are just melted into a cuboid aluminum block whose bottom is a square with a side length of 5 cm. What is the height of the molten aluminum block in centimeters?
一块长15厘米，宽6厘米，高5厘米的长方体铝锭，与另一块棱长4厘米的正方体铝锭，正好熔铸成一个底面是边长5厘米的正方形的长方体铝块．熔成的铝块的高是多少厘米？
<result>50.26</result>