Answer:
76.84 inches.
Explanation:
We have been given that a TV -cabinet is 64 inches long and 52 inches high.
After leaving 2 inches on all sides, our new dimensions would be:
Length:

Height:

Now, we need to find diagonal of the television using Pythagoras theorem.



Take square root of both sides:



Therefore, we could put a 76.84 inches TV.