[填空题]
A surveillance camera records thep.p*gi 1iojkcny 49 o5 area in front of a warehouse, shown as the s7d 5u+fhd* pgqe m(w0uhaded area in the following diagram. The camera's field of view has a radial distance of 15m, reaching a maximum distance of*(w 7h 0d gu5d+fqpmue 21m away from the camera, and covering an angle of $150^{\circ}$.
1.Calculate the length of the outer arc the camera can record, the arc from point A to point B. m
2.Find the area the camera can record. $m^2$
