Well one thing you can easily deduce is that a cube or square is said to have similar lengths of sides. With that said:
The surface area is simply the area of each side added in total. A cube has 6 sides, so divide 181.5 by 6. This gives you:
30.25 ~ Now find the square root of that considering what times what equals 30.25.
5.5 ~ That is your answer.
Fraction form:
30.25 = 30 1/4
5.5 = 5 1/2
I hope that helps, have a great rest of your day! ^ ^
{-Ghostgate-}
