Question

I need answer quickly

Answer 1

Hello !

Answer:

Step-by-step explanation:

Pythagorean Theorem : a² + b² = c² ⇔ b² = c² - a²

Here, we have a = 4 and c = 6 so :

    b² = 6² - 4²

⇔ b² = 36 - 16

⇔b² = 20

⇔ b = √20  (and not b= -√20 because b ≥ 0)

Answer 2

Answer:

b = $\sqrt{20}$

Step-by-step explanation:

Using the Pythagorean Theorem:

6² = 4² + b²

⇒ b² = 6² - 4²

⇒ b = $\sqrt{6^2 - 4^2}$

⇒ b = $\sqrt{36 - 16}$

⇒ b = $\sqrt{20}$