how would i solve this?

4) Torque: A rigid rectangular loop, which measures 0.30 m by 0.40 m, carries a current of 5.5 A, as shown in the figure. A uniform external magnetic field of magnitude 2.9 T in the negative x direction is present. Segment CD is in the xz-plane and forms a 35 angle with the z-axis, as shown. Find the magnitude of the external torque needed to keep the loop in static equilibrium. YA 0.30 m B A 0.40 m 5.5 AT C B = 2.9 T D 350 Z