Calculate Half-Round Field

Calculator for the perimeter and size of a half-round, semicircular field, with different units. The area of a half-round is, compared to the round, half as much, whereas the perimeter is half the circumference plus the diameter.
Please enter one value and choose the units. The other three values will be calculated.

Units of measurement: cm=centimeter, dm=decimeter, m=meter, km=kilometer, in=inch, ft=foot, yd=yard, mi=mile, ²,sq=square, a=are, ha=hectare, ac=acre