If the radius of the circle is r, then the area of the quadrant is 0.25*pi*r^2
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To find the area of the circle pi*radius*squared and subtract the area of the figure inside
If you the radius of the circle is r then the perimeter of a quadrant = r*(2 + pi/2).
A quadrant.
Area of a circle = pi*radius2
You add the area of the square with the area of the semi circle.