So let the chicken farm be long against the wall, provided that the wall is long enough. .....
Let: the width is x.
Clear suggestion = 3X+5 = 35；; x = 10； Length = 15m, width = 10m, enclosed area = 150m.
Lingling suggestion = 3X+2 = 35；; x = 1 1； Length = 13m, width = 1 1m, enclosed area = 143m2.
Therefore, the design is obviously practical, because the enclosure area is large.
According to the reasonable design, the maximum enclosure area is about 195 square meters, and the bamboo fence is arranged in a semicircle.
Half arc length =πr=35, r=35/π.
Semicircular area =πr? /2=π(35/π)? /2=35? /2π ≈ 195m2