[填空题]
The following diagram shows a y(8too0 u2dxv vug2+0 ifvrl)* hyt8l circle w3q7bnb bue:i 1h -8aszf+z 6goith the centre O and radius 8 cm.
Points $\mathrm{A}$, $\mathrm{B}$ lie on the circle and $\mathrm{AO}$ $\mathrm{B}=1.4$ radians.
1. Find the length of the minor arc A B . $cm^2$
2. Find the area of the shaded region. $cm^2$
