VOLUME = 4/3 pie radius ³
The circumference of a circle is equal to pi * diameter
So 10 miles = 0.75 * pi * d
10/(0.75*pi) = d
d = <span>4.244 miles</span>
The given series is
Where the first term, a , is 3.
And the difference is constant, that is
So the constant difference, d is 3.
Since the difference is constant, so the given series is arthmetic.
And for explicit rule, we use the formula of nth term, which is
Substituting the values of a and d, we will get
Recursive rule is used to tell us the relationship between previous and current term. And the required rule is
It’s choice D. Z, hope that helps :)