Answer:
48w^2y^2
I used a simplify calculator I hope this is correct.
Absolute value because for any number given the y or answer will be no less than 0 it will.always be positive
Given end points of diameter,
(x1,y1)=(-3,-4)
(x2,y2)=(0,0)
Now,
the equation of circle is,
(x-x1)(x-x2)+(y-y1)(y-y2)=0
or, (x+3)(x-0)+(y+4)(y-0)=0
or, x^2 +3x +y^2 +4y =0
or, x^2 +y^2 +3x + 4y=0
which is in the form of x^2 +y^2 +2gx +2fy + c=0
where,
g=3/2
h=2
c=0
Now,

989.5 divided by 17.8 is 55.5898876404
so about 55 ish
I think that's right but I'm not sure :)