Answer:
30
Step-by-step explanation:
daisies
The correct answer is option C and D.
C). DC = 6√3
D). AC = 12√3
125.6m^2
Let R be the greater radius and r be the smaller radius
Area of the sidewalk = R^2 - r^2 - This can be the expression
= 3.14
=(R^2-r^2)
=(11^2-9^2)
=(121-81)
= 40
= 3.14 x 40