Please solve with steps

The Earth''s geomagnetic field has a dipole moment |7 = 7.70 x 10* A m? and is oriented such that it points towards 80.8S and 107.4E. The global cartesian coordinate system has its origin at the centre of the Earth, with the z-axis pointing towards the north geographic pole, the xz-axis pointing in the equatorial plane at the Greenwich meridian, and the y-axis pointing in the equatorial plane towards 90E. a) Find / for the Earth''s geomagnetic dipole moment in this reference system. b) If is the vector pointing from the centre of the Earth to Toronto, Canada, find r. c) If the Earth's magnetic field were purely dipolar, what would be the value of |B| in Toronto