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a² + (b/2)² = 49, (a-b-7/(2\sqrt(2)))² + (b/2 - 7/(2\sqrt(2)))² = (7/2)²
a² + (b/2)² = 49, (a-b-7/(2\sqrt(2)))² + (b/2 - 7/(2\sqrt(2)))² = (7/2)²
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