Atriangle has one leg that measures 14 feet and the hypotenuse is 50 feet. what is the length of the other leg?

Ok so we are using the Pythagorean theorem so were gonna do A^2 + B^2 = C^2

It don't say which leg we have so you can use either a or b.
Which would get us 14^2 + B^2 = 50^2
14*14 =196 , 50 *50 =2500
Then we have to  subtract the two.
So 2500 - 196 = 2,304
Then you take the take the square root of that answer and you have your other leg. 
The square root of 2,304 is 48
So the missing leg = 48

Idon’t know this and this isn’t middle school work