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The area of a semicircle is one-half the area of a circle. it is equal to (pi/2)r^2, where r is the radius.
Let r be the radius of the circle. Then the perimeter of the half circle is pi*r + 2r. That is half of the circumference plus the diameter.
Assuming a circle with a diameter of one half inch, A = 2Ï€r so the area in square inches would be half of pi or about 1.57 in2.
Half of half of half of one half is one sixteenth (0.0625).
One half of 30 is 15.One half of 30 is 15.One half of 30 is 15.One half of 30 is 15.One half of 30 is 15.One half of 30 is 15.