Final answer:
Chris will need to buy 64ft of fencing for his dog's enclosure.
Step-by-step explanation:
To find out how much fencing Chris will need to buy, we need to calculate the perimeter of the rectangular space. The perimeter is the sum of all four sides. Given the dimensions of the space, we can calculate the perimeter as follows:
Perimeter = 2(length + width)
Perimeter = 2(22ft + 10ft)
Perimeter = 2(32ft)
Perimeter = 64ft
Therefore, Chris will need to buy 64ft of fencing for his dog's enclosure.