Answer:
x^2+y^2=16
Step-by-step explanation:
x^2+y^2=r^2 is the mother function of the equation of a circle centered at r with radius r
since r is defined to be 4 and 4^2 is 16 therefore, the equation would then be
x^2+y^2=16
Answer:
(x)^2 + (y)^2 = 4^2
Step-by-step explanation:
The standard form of an equation for a circle is
(x-h)^2 + (y-k)^2 = r^2
where (h,k) is the center and r is the radius
Since the center is 0,0 and the radius is 4
(x)^2 + (y)^2 = 4^2
