A right triangle is formed.

Pythagorean Theorem

a² + b² = c² {the sum of the squares of the legs is equal to the square of the hypotenuse}

a and b are the legs

c is the hypotenuse

5² + 15² = c² {substituted into Pythagorean Theorem}

25 + 225 = c² {evaluated exponents}

250 = c² {added 25 and 225}

c = √250 {took square root of each side}

c= √25 √10 {broke down square root of 250}

c = 5√10 {evaluated square root of 25}

**ladder is 5√10 ft***- Algebra House*
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