The answer is
A≈3217u²
For the area of circles, multiply

×radius²
Answer:

Step-by-step explanation:
Given sequence: 
Therefore,
General form of an arithmetic sequence: 
(where a is the first term and d is the common difference)
To find the common difference, subtract a term from the next term:

Therefore,

To find the 6th term, input n = 6 into the equation:

True the output or dependent variable is on the y (vertical) axis