Answer: 65.86 inches
Explanation:
Length of the hypotenuse (length of diagonal) : a^2 + b^2 = c^2
The length (a)= 57
The height (b) =33
57^2= 3,249
33^3= 1,089
3,249 + 1,089 = c^2
4,338 = c^2
We next square root both sides to find c by itself (length of the diagonal)
c= 65.8634952...
You can then round to however many decimals are required.
To the hundreds place: 65.86 inches