At which points do the circles (x - 1)2 + (y - 1)2 = 4 and x2 + (y - 2)2 = 2 intersect?

If a sprinkler waters 1 over 12 of a lawn in 1 over 2 hour, how much time will it take to water the entire lawn? (5 points) 10 hours 6 hours 1 over 6 hour 7 over 12 hour