The maximum area possible using 100 feet of fencing is that inside a circular fence. But, since you asked about a rectangular fence: a 25x25 fence would hold 625 square feet. a 10x40 fence would hold 400 square feet. a 5x45 fence would hold 225 square feet. As you can see, the square is the rectangle that encompasses the largest area, as it is closest to a circle.
If it is perfectly square, it will be just short of 210 feet per side. So you will need 840 feet of fence.
9013 ft. square pasture
The area would be 30 square feet.
The garden has to be 36-ft by 39-ft. 150-ft of fence will just enclose it, and the area is 1,404 square feet. If the length didn't have to be 3-ft more than the width, then he could make it 37.5-ft square. The same 150-ft of fence would enclose it, but the area would be 1,406.5 square feet ... a full 0.16%, or 2.5 square feet, more.
The maximum area possible using 100 feet of fencing is that inside a circular fence. But, since you asked about a rectangular fence: a 25x25 fence would hold 625 square feet. a 10x40 fence would hold 400 square feet. a 5x45 fence would hold 225 square feet. As you can see, the square is the rectangle that encompasses the largest area, as it is closest to a circle.
You would need 2,640 feet of fence.
225 square feet
If it is perfectly square, it will be just short of 210 feet per side. So you will need 840 feet of fence.
1 acre = 43,560 square feet. 5 acres = 217,800 square feet. That's a square 466.69 feet on a side. If you need to fence all 4 sides, then you need 1,866.76 feet of fencing.
9013 ft. square pasture
It is 77 feet long.
The only way is to increase the height of the fence.
That depends on the shape of the lot. But, assuming the lot is a perfect square, you would need 10,560 feet (two miles) of fence to surround it.
There are 43, 560 square feet in an acre. There are 348,480 square feet in eight acres. Assuming that the area is a square, you will approximately need 2361.28 feet of fencing. If the area is one foot wide, you will need a lot more fence than that.
60 acres is 9013 ft. in square pasture
The length of a fence that surrounds 220 acres depends on the shape of the fence. A circular fence, a rectangle, a square, etc. If it's a square it would be 2.345 miles or 12383 feet long