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a² + b² = c²
(4y)² + (3y)² = 40²
16y² + 6y² = (40 × 40)
16y² + 6y² = 16.000
(16 + 6)y² = 16.000
25y² = 16.000
y² = 16.000 ÷ 25
y² = 64
y = √64
y = 8
cmiiw
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a² + b² = c²
(4y)² + (3y)² = 40²
16y² + 6y² = (40 × 40)
16y² + 6y² = 16.000
(16 + 6)y² = 16.000
25y² = 16.000
y² = 16.000 ÷ 25
y² = 64
y = √64
y = 8
cmiiw