PLEASE PLEASE HELP ME WILL FAN AND MEDAL!!!!

Question

anonymous · Answer

A circle is represented by the equation shown below.

(x - 7)2 + (y - 8)2 = 121

Which statement is true?

 The circle is centered at (7, 8) and has a diameter of 11.

 The circle is centered at (7, 8) and has a radius of 11.

 The circle is centered at (-7, -8) and has a radius of 11.

 The circle is centered at (-7, -8) and has a diameter of 11.

anonymous · Answer

tricky because of that "radius, diameter" business

anonymous · Answer

$$(x - 7)^2 + (y - 8)^2 = 121 $$ looks like $$(x - h)^2 + (y - k)^2 = r^2 $$ a circle with center $(h,k)$ and RADIUS $r$

anonymous · Answer

that makes the radius $\sqrt{121}=11$ not the diameter

anonymous · Answer

oops still not A
go with B

anonymous · Answer

bahaha okay thank you so much :)

anonymous · Answer

yw