Last year mr.peterson had a fence all the way around his garden. he can reuse all of the fence he had around the garden last year, but he needs to buy more fencing to go around this year's garden. how many more meters of fencing is needed for this year's garden than last year
First, you need to find out the perimeter of the fence and how much of the fence he had around his garden last year (leftovers) and subtract them I think.