Bonsoir,
6² + 8² = 36 + 64= 100cm
√100 => 1cm
15² + 20² =225+40=425
√425 =>20cm
50² + 120² = 2 500+14 400= 16 900
√16 900 => 130cm
2,5² + 6² = 6,25 + 36 = 42,25
√42,25 => 6,5cm
