I believe the average could be around 4.0 though 4.9 or around 5.0 through 6.0 :)
The main factor would be how much vegetation the moose would consume other factors include genetic biodiversity and disease.
So use half the surface area formula: SA=2πr^2 and plug in what you already know
since you don't know the radius yet, solve for it using the circumference
C=2πr
514.96=3.14(2)r
82=r
SA=2π(82)^2
SA=6.28(6724)
SA=42,226.72
so your answer is 42,226.72 yards squared
Yes.
Language affects the way we think about things. Different languages embed diferent values and perspectives, so knowing more than one langage tends to help a person think about things in more than one way.