No, 1 decibel is 10^1/10. Bels are multiplicative, not additive. You multiply 10^.1 by itself 10 times and you get 10^1. Similarly if you multiply x^1/2 by x^1/

No, 1 decibel is 10^1/10. Bels are multiplicative, not additive. You multiply 10^.1 by itself 10 times and you get 10^1. Similarly if you multiply x^1/2 by x^1/2 you get x.