Question

the tron cle to find two points nce of 5 from (3, 6). (0, 3). le with the end- 13. Find the center and radius for each of the following circles: (a) (x - 0)² + (y - 0)² = 16 (b) (x - 2)+ (y + 2)2 = 25 (c) (x + 1)+ (y - 1)2 = 4 (d) (x - 1)+(y - k) = 2 is.

Answer 1

Centre = (0, 0) and radius = 4

The equation of a circle is given as

(x - h)^2 + (y -k)^2 = r^2

We are given the equation

(x - 0)^2 + (y - 0)^2 = r^2

h = 0 and k = 0

r^2 = 16

r = 4

Hence, the centre of the circle is (0, 0) and radius = 4