Here's the problem I am solving: The current in a solenoid with 22 turns per centimeter is 0.50 A. The solenoid has a radius of 1.5 cm. A long, straight wire runs along the axis of the solenoid, carrying a current of 31 A. Find the magnitude of the net magnetic field a radial distance of 0.91 cm from the straight wire. What I did was: B = square root (Bw² + Bs²) = square root [(μoIw/2πr)² + (μonIs)²] = μo x square root [(Iw²/4π²r²) + (n²Is²)] = (4π x 10^-7 Tm/A) x square root[(31A²/4π²(0.0091m)²) + (22cm^-1)²(100cm/1m)²(0.50A)²] Can I get a confirmation that the answer is 1.54 mT? Thanks.