appx. 30' 4.9"
-- A rectangle has no 'formula'. -- The length of the diagonal is 24feet 10.62inches (rounded)
60.28 is the length of the diagonal, got through Pythagoras' Theorem.
If you know its dimensions then use Pythagoras' theorem to find the length of its diagonals.
36
d=x√2 where d is a diagonal and x is a side d=80√2 (or 113.137)
The diagonal of a square = the length of one side x the square root of 2 (approx 1.414)
The cube root of 216 is 6. So 6x 6 x 6 = 216. The length of each side of a cube such as this would be 6 units. If 216 m3 volume then each length would be 6m etc.
216 = 6 x 6 x 6, hence each side is 6 inches
6cm... if side is assumed as x...volume is x^3
About 28.28 feet.
By using Pythagoras: diagonal2 = side2 + side2 = side2 x 2 => diagonal = side x √2
If it is a 2-D box then 70.71