The area of a semi-circle with a diameter of five is: 9.817 units2
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Radius is = to half the diameter so.... when the radius of the semicircle is 5ft then the diameter is 10ft.
In a semicircle, the diameter is the straight line. It is also equal to double the radius, and that property allows it to be used when calculating area and circumference.
25
it is have the diameter
It is: pi*4^2 divided by 2 = 8/pi which is about 25 square cm