Answer:

Step-by-step explanation:
Given the function 
The average rate of change of the function h(x) over the interval
can be calculated using formula

In your case,

so the average rate of change is

C=2•pi• R
D=6 then the radius is 3
2•Pi•3 =18.85
Answer:
20°
Step-by-step explanation:
C70° vertically opposite... the alternate then vertically opposite again then 90° - 70° = 20°
Answer: the blue and the pink