SOLUTION: Think I have the formula wrong cause my answer doesn't seem to make sense: In a right triangle, find the length of the side not given. A=5, c=13

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Question 484395: Think I have the formula wrong cause my answer doesn't seem to make sense:
In a right triangle, find the length of the side not given. A=5, c=13

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
a right triangle, find the length of the side not given. A=5, c=13
the formula: a^2 + b^2 = c^2, b is not given
:
5^2 + b^2 = 13^2
25 + b^2 = 169
b^2 = 169 - 25
b^2 = 144
b = sqrt%28144%29
b = 12
:
:
You can check this in your calc, enter sqrt%285%5E2%2B12%5E2%29, see the results of 13