[填空题]
A rotating sprinkler waters pawwq xt+,g*way8 cmdkh17by z nsb; /33rt of a lawn, shown as the shaded area in the dia5(b f2kynd9m wgram below. The sprinkler covers a distance of 13wf9( myn5d bk2m, reaching a maximum distance of 17m and covering an angle of $130^{circ}$.
1.Calculate the length of the outer arc the sprinkler can reach, the arc from point A to point B. m
2.Find the area the sprinkler can cover. Give your answer to the nearest square metre. $m^2$
