Respuesta :

fieryanswererft

Answer:

b = 4.5 mm

Step-by-step explanation:

using Pythagoras theorem:

a² + b² = c²

4² + b² = 6²

b² = 6² - 4²

b² = 36 - 16

b² = 20

b = √20

b = 4.5

Xignerso

Pythagoras theorem:

a² + b² = c²

4² + b² = 6²

b² = 6² - 4²

b² = 36 - 16

b² = 20

b = [tex] \sqrt{20}[/tex]

b = 4.5

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