Question

Can u please use an explanation, i need it for my answer please.

Answer 1

Answer: 15 feet (choice B)

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Work Shown:

`a^2 + b^2 = c^2 \ \ \text{ ... pythagorean theorem}\\\\12^2 + 9^2 = c^2\\\\144 + 81 = c^2\\\\225 = c^2\\\\c^2 = 225\\\\c = √(225)\\\\c = 15\\\\`