maths

c=sqrt(206000000*(1-0.3)/(7.85*(1-2*0.3)*(1+0.3))

c= --> 5943 what is correct

5943=sqrt(206000000*(1-u)/(7.85*(1-2*u)*(1+u))

u should be 0.3 but isnt
WHATS WRONG?

plz help....