Question 4 • 2025-26 WCSB FL-1205040-M/J Grade 7 Mathematics B-4th only
For a Pythagorean triple, the squares of the two shorter sides add to the square of the longest side. Here, 13² + 84² = 169 + 7,056 = 7,225, and 7,225 = 85², so x is 85, choice A.
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