X2 - 2x + 9x - 18
X2 + 7x - 18
Answer:
a. Radius of DA - 2 cm.
b. Area of rectangle ABCD -
c. Area of shaded - 8-4π
d. Perimeter of shaded region - also 8-4π
<em><u>Hope this helps! </u></em>
It is 10.7703296143, but estimated it would be about 11. Hope I helped!! :)
