Question

What is the answer?!

Answer 1

The equation  of a circle with a center (a, b) and a radius r:

$(x-a)^2+(y-b)^2=r^2$

We have the center (5, 7) → a = 5, b = 7, and the radius r = 2.

Substitute:

$(x-5)^2+(y-7)^2=2^2\\\\\boxed{(x-5)^2+(y-7)^2=4\to A.}$

Answer 2

Answer:

A

Step-by-step 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

here (h, k) = (5, 7) and r = 2 ⇒ r² = 4, hence

(x - 5)² + (y - 7)² = 4 → A