Difficulty: Easy
Correct Answer: 5
Explanation:
Introduction / Context:We are told a right triangle has side lengths that are consecutive integers. The largest of the three must be the hypotenuse. We enforce the Pythagorean relation to determine the integer value(s).
Given Data / Assumptions:
Concept / Approach:
Step-by-Step Solution:
(x+1)^2 = x^2 + (x−1)^2x^2 + 2x + 1 = x^2 + x^2 − 2x + 1Simplify ⇒ 0 = x^2 − 4x ⇒ x(x − 4) = 0x = 4 (reject x = 0 as a length)Hypotenuse = x + 1 = 5Verification / Alternative check:Check triple (3, 4, 5): 3^2 + 4^2 = 9 + 16 = 25 = 5^2; valid Pythagorean triple.
Why Other Options Are Wrong:
Common Pitfalls:
Final Answer:5
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