I am not answering all the questions.
I will only do the first one.
A = pir^2
A = pi(6)^2
A = 36pi
You do the rest.
Step-by-step explanation:
Solve by Subsitution

Replace this into the second equation


Write in standard form

Use the quadratic formula, and our answer will be
(6.97,43.02)
(43.02,6.97)
Answer:

Step-by-step explanation:

Let's create a table of the values.
