The length of the television will be 24 inches. Then the correct option is C.
The Pythagoras theorem states that the sum of two squares equals the squared of the longest side.
The Pythagoras theorem formula is given as
H² = P² + B²
The length of the diagonal of a television is 30 inches and its width is 18 inches.
Then the length of the television will be
30² = 18² + L²
L² = 900 - 324
L² = 576
L = 24 inches
Then the correct option is C.
More about the Pythagoras theorem link is given below.
https://brainly.com/question/343682
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