Question

Just the last question and than I'm done.

Answer 1

5^2 = 25

13^2 = 169

169 - 25 = 144

The square root of 144 = 12.

12 + 2 = 14.


a^2 + b^2 = c^2

5^2 + b^2 = 13^2

25 + b^2 = 169
-25              -25

b^2 = 144
sqrt      sqrt

b = 12
         +2

14