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>
80
Step-by-step explanation:
10- w = 90
w = 90 -10
w = 80
ok
5'm