What is the fux density when a fux of 2×10−4 Wb passes through an area of 2 cm 2 at (a) right angles, (b) 45° to it? What is the fux density inside a solenoid with a cross-sectional area of 1 cm 2 if...

What is the fux density when a fux of 2×10−4 Wb passes through an area of 2 cm²
at (a) right angles, (b) 45° to it?

What is the fux density inside a solenoid with a cross-sectional area of 1 cm²
if the fux passing through it is 20 μWb?