No. The radius is half of the diameter.
u as in quarter
.25 acres or One Fourth Acre. There is no official name for it. A quarter-acre.
1in = 2.54cm 1.25in x 2.54cm/in = 3.18cm
Three-fourths, or 3/4.
It is 1 acre.
It would be called the perimeter of the acre. But there is no way to give you an actual answer, since the perimeter will vary depending upon the shape of the acre.
A unit of area or as of farmland is called an acre.
A quarter acre used to be called a rood in England, now an archaic unit no longer used.
Field. Or, obsoletely, acre.