What is the area of the shaded region?

Apath 3 m wide runs around the inside of a square park inside 60 m. find the area of the path. pls

Solve the system. -a+4b+2c=-8 3a+b-4c=9 b=-1 a.(0,11) ,-1,2) c.(1,1,-2) d.(2,-1,-1)

You decide instead to take the train there. the train will take 135 minutes. convert this into hours and minutes.