Can someone please tell me what (HGI) and (HJI)

Which sentence uses an objective tone? we will plant the best garden of any school in the area. the new campus garden will surely be envied by other schools. a garden would provide numerous benefits to the students. you will probably agree that gardens have many benefits.

If you have 12 feet of string and you cut it into equal length of 5 inches each how much string will be left

Ineed the solution to this problem and the steps.