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The length and breadth of the screen of an LED – TV are 24 inches and 18 inches. Find the length of its diagonal.

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The length and breadth of the screen of an LED – TV are 24 inches and 18 inches. Find the length of its diagonal.

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The length and breadth of a LED TV form a right angled triangle with its diagonal.

Therefore by Pythagoras theorem,

AC2 = AB2 + BC2

= 242 + 182 

= 576 + 324 = 900 = 302

∴ AC = 30 

⇒ The length of the diagonal is 30 inches.

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