Magnetic flux calculation - II

Two solenoids of different radii are shown below.

Solenoid $1$‍ (in red here) has an area of cross-section $A_1=0.010{\text{m}}^2$‍ and $N_1=200$‍ turns. Solenoid $2$‍ (in grey here) has an area of cross-section $A_2=0.10{\text{m}}^2$‍ and $N_2=50$‍ turns.

A current runs in the solenoid $1$‍ producing a uniform field of $4.0\text{T}$‍ within it.

$|\mathrm{\Phi }|=$‍ $\text{Wb}$‍