Answer:
216 sq inches
Step-by-step explanation:
Let initial surface area be given by l*w hence lw=54 square inches
When the new cube has double edge lengths, new l is 2l and new w is 2w
New area is 2l*2w=4lw
If lw=54 square inches
4lw=?
New area=4lw*54/lw=216 square inches
Therefore, the new surface area will be 216 square inches
