Answer:
The area of each section of the circle is 
Step-by-step explanation:
we know that
Each section represent a quarter of circle
The area of a quarter of circle is equal to

we have

substitute


Answer:
See attachments
Step-by-step explanation:
Answer: Answer is f(x) = 25x4 - 7x2 + x + 4
Step-by-step explanation:
Answer:
-3 and -9 are the roots.
Step-by-step explanation: