Painted Area: 72 in^2
Unpainted Border on all sides: ====> 4 in"
4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 = 72
Answer: =====> 66 inches
My Internet kept messing up on me here, but the Answer is 66 inches, Sorry I couldn't finish working out the problem, going to check out my internet. - Thanks - P.
Hope that helps!!!! : )