Answer:
a) The center coordinates O is (0,0)
b) The radius C = 15
Step-by-step explanation:
The given equation of the circle is : 
Now, general form of the equation of the circle is:

where (h,k) are the center co -ordinates and r is the radius of the circle.
Comparing the general equation with the given equation, we get

So, here the center coordinates (h,k) = (0,0)
And the radius of the given circle is r = 15
Answer:
It looks really good! Lol, I wish I could art ✌
Answer:
here is the answer... for it
Answer:
55
Step-by-step explanation:
20% is the same as 1/5, so we can multiply 11 by 5:
11*5=55