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Sagot :

Answer:

Fourth Option

Step-by-step explanation:

Pythagorean Theorem:

[tex]a^{2} + b^{2} = c^{2}[/tex]

Solution

[tex]4^{2} + b^{2} = 12^{2}[/tex]

[tex]b^{2} + 16 = 144[/tex]

[tex]b^{2} = 128[/tex]

[tex]b = \sqrt{128} = 11.3[/tex]

Answer:

8

Step-by-step explanation: