hello i need help pls thank you

The figure shows a cross section across a long cylindrical conductor of radius a = 2.42 cm carrying uniform current 24.7 A. What is the magnitude of the current's magnetic field at radial distance (a) 0, (b) 1.30 cm, (c) 2.42 cm (wire's surface), (d)4.15 cm? Each of the eight conductors in the figure carries 9.49 A of current into or out of the page. Two paths are indicated for the line integral L j. B - 45.What s the value of the integral for (a) path 1 and (b) path 27 | @