The area of the circle is equal to pi multiplied by the square of the radius. the general equation that represents the equation of the circle is x^2 + y^2 = r^2. r is equal to 2 such that r^2 is equal to 4. hence the equation becomes <span>x^2 + y^2 = 4</span>
We divide 12 months which is the time Alex would like to be a member by 2 which gives us 6. We know 2 months=$125 so if 2×6=12, $125×6 = A 1 year membership.
