1) Let's draw this to better understand this
So, in other words, the problem is questioning us about the Perimeter(2P).
W=29 and L=22
w+w+l+l =2P
2w+2l=2P
2P= 2(w+l) Pluggin into the formula:
2P=2(29+22)
2P=2(51)
2P=102 feet
2) So we'll need 102 feet of fence to enclose that rectangular garden.