Question

what is 21^2+a=29^2 what is the value of a in pythagoren therom

Answer 1

21^2+a=29^2

a+441 = 841
 a=400

what is the value of "a" in the Pythagorean theorem?

a^2+b^2=c^2    
20^2+21^2=c^2
400+441=c^2
841=c^2
292=841
841=841
It's a right triangle