[填空题]
A rotating sprinkler wateoeuyq3(+o q+ nr8wqnfmz-0n )s s part of a lawn, shown as the shaded area in the diagram below. The sprinkler covers a distance of 13m, reaching a maximum distance 8znq fs-)nwm0of 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. $m^2$