Question

Find the unknown length.
A=5 b=12

Answer 1

What?

Answer 2

missing something

Answer 3

That's all it gave me

Answer 4

the value of two variables. What is the unknown length?, still unknown

Answer 5

A^2+b^2=c^2

Answer 6

replace the given A and B to the equation that you have

Answer 7

A=5 b=12
A^2+b^2=c^2 ( at this time, don't care about the c, we'll deal with it later on)
5^2 +12^2=c^2
(5*5) + (12*12) =c^2
25+144=c^2
169=c^2
Okay, now this time we care about the letter c. When you have C is unknow #, don't worry about it, it normally will be the answer from the sum of A and B. But in this case, it's still a unknow # because of the square! So when It square, you do square roof! like this
\[\sqrt{169}=c\]
And why don't you square roof the C? because square is square roof so when you square roof the #, aka you pass the square to the number, under square roof form, and why you do that? Search google, I dunno how to explain, so that this step, you can take the # divide for 1 over 2 or use calculator \m/

so c = 13 tada~~~~