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Find the length of the support cable required to support the tower with the floor

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#### Solution

From the figure, by Pythagoras theorem,

x^{2} = 20^{2} + 15^{2}

= 400 + 225

= 625

x^{2} = 25^{2}

⇒ x = 25 feet.

∴ The length of the support cable required to support the tower with the floor is 25 feet.

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