Answer:
48 times the original surface area.
Explanation:
When the length of each side of a cube is tripled, the new length of each side becomes 3 times the original length.
Let's denote the original length of a side as "a".
Original Surface Area = 6a^2
New Length of Side = 3a
New Surface Area = 6(3a)^2 = 6(9a^2) = 54a^2
Change in Surface Area = New Surface Area - Original Surface Area
Change in Surface Area = 54a^2 - 6a^2 = 48a^2