[填空题]
A surveillance camera ay t5j)bw2(zz1 vzsmv rp0m5(records the area in front of a warehouse, shown as the shaded area in the following diagram. The camera's field of view has sv5v10 zmpr (ma radial distance of 15m, reaching a maximum distance of 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. $m^2$
