Question

What is the missing side length?
(Use Pythagorean Theorem)

Answer 1

b = 20

Explanation:

15 + b = 25

(you have to square each one)

15 x 15 = 225

b x b = b

25 x 25 = 625

625 - 225 = 400

`√(400)` = 20

hope this helps

Answer 2

20 units

Explanation:

The Pythagorean Theorem states that:

`a^(2) + b^(2) = c^(2) \\`

Now we can insert values into the equation.

`a = 15\\b = b\\c = 25\\`

Now we can plug these ☝ values into the Pythagorean Theorem:

`15^(2) + b^(2) = 25^(2)\\`

After we solve for
`b` we get:

`b^(2) = 400\\b = 20`