Answer:

Step-by-step explanation:
Area = pi*r^2
Area = pi*9^2
Area = 
Infinite they’re all multiples, so they are the same line
<em>Note: Your answer choices remain a little unclear. But, I have solved the concept and solution, so you can easily figure it out.</em>
Answer:

Step-by-step explanation:
Given the expression

solving the expression

apply the rule: 


simplify

Therefore, the simplified form is:

<em>Note: Your answer choices remain a little unclear. But, I have solved the concept and solution, so you can easily figure it out.</em>
Your intention with the wording "consecutive integers of 12 feet" is not clear. Shown are triangles with sides 12 and 13 (a nice Pythagorean triple) as well as 11 and 12.