This is my attempt, I am assuming an ampere loop of circle at point P.

The magnetic field at point P due to the circular pipe is

The ampere loop formula is

\(\displaystyle

\int B.ds = Ienc*u0;

\)

**B * 2*Pi*(R + R) = u0*0.008; // i = 0.008Amps**

B = 0.3 * 10^-7;

B = 0.3 * 10^-7;

The magnetic field due to the wire

(u0 * I)/(2*Pi*R) = 0.3*10^-7;

**I = 3.9mA**

Please advise if i am correct?