"enclose the garden and the PATH" means the path is inside the fence. The fence has to be 3 ft wider on each end of the width and 3 ft longer on each end of the length. So add 6 ft to 33 ft and double that for total length of 2 sides. Add 6 ft to 30 ft and double that for total length of 2 ends. Add those 2 totals together for total length of fence. If all else fails, draw a picture.