Question

A circle is centered at 7,8 and has a radius of 11 what is the equation?

Answer 1

SchwarzschildRadius here:

So,

The equation for a circle is:

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

Where the center of the circle is (h,k), and the radius of the circle is r.

Substituting 7,8 for (h,k) and 11 for r in the equation gives us:

$(x-7)^2+(y-8)^2=11^2$

That would be standard form.

Hope this helps!

Answer 2

Answer:

(x − 7)2 + (y − 8)2 = 121

Step-by-step explanation:

I took the quiz and this was the correct answer. Although (x − 7)2 + (y − 8)2 = 11 was an answer choice it was incorrect. Here is proof from my quiz for verification.