Question

1. What is the radius of the red circle?

Answer 1

Answer:

See below

Step-by-step explanation:

1. Radius of the red circle = 2 units

2. Radius of the blue circle = 1 unit

3. Coordinates for the center of the red circle = (-2, 2)

4. Coordinates for the center of the blue circle = (2, 2)

5. Equation for the red circle:

$\{x - (-2)\}^2 + (y-2)^2 = 2^2$

$\red{\boxed {(x+2)^2 + (y-2)^2 = 4}}$

6. Equation for the blue circle:

$(x-2)^2 + (y-2)^2 = 1^2$

$\purple {\boxed {(x-2)^2 + (y-2)^2 = 1}}$