2 Answers

Fullstackduck · Answer 1 · 2019-02-04T14:50:31+0000

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:

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

Diimdeep · Answer 2 · 2019-02-08T09:53:51+0000

Answer:

A

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

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