A flat circular loop of radius $0\mathrm{.}10$ m is rotating in a uniform magnetic field of $0\mathrm{.}25$ T$.$ Find the magnetic flux through the loop when the plane of the loop and the magnetic field vector are perpendicular. O$7\mathrm{.}97\mathrm{.}9*10^-3*$ T $*$ m $^2$; $6\mathrm{.}3*10^-3*$ T $*$ m $^2$; $0$T $*$ m $^2$; $5\mathrm{.}5*10^-3*$ T $*$ m $^2$