You can factor -80 as

So, we have

The square root of a product is the product of the square roots:

Since
and
, we have

448 square inches.
The surface area of the box is 448 square inches so that is the least amount of paper needed to cover the box.
Answer:
The answer to your question is:
Step-by-step explanation:
m ∠ 1 = 27°
m ∠ 1 and m ∠ 2 are supplementary
m ∠ 1 + m ∠ 2 = 180°
27° + m ∠2 = 180°
m ∠ 2 = 180° - 27°
m = 2 = 153°