According to the question, we get

The side length of 64 grams of ice cream = 64^1/3=4

Then its surface area = 4*4*6 =96

Similarly, find the surface area of ??216 grams of cube ice cream = 216

According to the relationship between the packaging cost and the surface area of ??the packaging box in the question, we get 216 grams of cube ice cream Packaging cost = 1.12*216/96 = 2.52 (yuan)

It is known that the cost of ice cream is 1 cent per gram, then the cost of ice cream = cost of ice cream + packaging cost = 0.01*216+2.52=4.68( Yuan)

Add 1 Yuan profit,

Find the selling price of 216 grams of ice cream = 4.68+1=5.68 (Yuan)