In polar coordinates, we have


From this we can write

If

, then

, so we get
Answer:
44π square units.
Step-by-step explanation:
Look for patterns
1 to 3 is plus 2
3 to 6 is plus 3
6 to 10 is plus 4
The sample in a statistical study is the subset from a population that is selected to meausure the variable.
In this case the population is all the national male readers of male magazines and the sample is the 3000 readers of male magazines that were radomly selected and interviewed.
Answer: the sample is the 3000 readers of male magazines that were radomly selected and interviewed