Question

Based on the following equation. what is the radius of this circle?
(x-3)+(y+2)^2=4

Answer 1

r = 2 units

Explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

(x - 3)² + (y + 2)² = 4 ← is in standard form

with r² = 4 ⇒ r =
`√(4)` = 2