21.86. find the area of the quadrilateral as if there wasn’t a semi circle cut out which is 36. then subtract the area of the semi circle which is found but squaring the radius, 3, and multiplying it by pi and then dividing by two. Which is about 14.137 Then you subtract the area of the semi circle from the area of the rectangle which is 36-14.137 which gets you a final answer of 21.86
