It depends on the shape of the enclosure, the weight of the fence, what other forces might act of the fence - animal pushing against it - etc.
I have a 15 metre fence to put ip using 150mm posts and palings, how do I convert to linear metres
15 poles.
10 to the power of 15
15 centimeters = 15% of 1 meter
1 meter = 3 feet 3 feet = 1 meter 50/3 = 15 50 feet = 15 meters It is 15 meters
15 meter mark
15 meters is about 49.2 feet.
15 sq km = 15,000,000 sq metres.
15
1 metre / 15 centimetres = 100 cm / 15 cm = 6.66... recurring.
The answer is "none", all birds will fly away
15 acres = 60702.85 sq metres (to 2 dp)