Answer:
348 in.² is the answer.
Explanation:
To find our answer we will multiply each number by each other.
6 x 8 = 48
6 x 9 = 54
8 x 9 = 72
Now we have our numbers 48, 54, and 72, we will multiply each one by 2.
48 x 2 = 96
54 x 2 = 108
72 x 2 = 144
For our final step we will add all these together to find our surface area. 96 + 108 + 144 = 348. Therefore, 248 in² is our answer.