Answer:
274in^2
Explanation:
Formula: 2(lw + lh + wh)
In other words Length * Width, Length * Height, Width * Height.
2(20 + 65 + 52)
2(137)
274
2(13×5)= 130
2(13×4)= 104
2(5×4)= 40
130+104+40= 274
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