Respuesta :
The center of the circle is (-9, 46), radius is 11.09053 and the diameter is 22.18, if the equation of circle is [tex](x+9)^{2} +(y-46)^{2}= 123[/tex].
Step-by-step explanation:
The given is,
[tex](x+9)^{2} +(y-46)^{2}= 123[/tex]
Step:1
Equation of circle is,
[tex](x-h)^{2} +(y-k)^{2}= r^{2}[/tex]...................(1)
Where,
(h, k) - Center of circle
r - Radius of circle
From given,
[tex](x+9)^{2} +(y-46)^{2}= 123[/tex]...............(2)
Comparing equation (1) and equation (2),
Center - (h, k) = (-9, 46)
[tex]r^{2} = 123[/tex]
Take square root on both sides,
[tex]r = \sqrt{123}[/tex]
= 11.09053
r ≅ 11.09053
Formula for diameter,
[tex]d =2r[/tex]
Substitute the value of r,
[tex]= (2)(11.09053)[/tex]
[tex]=22.18[/tex]
diameter, d = 22.18
Result:
The center of the circle is (-9, 46), radius is 11.09053 and the diameter is 22.18, if the equation of circle is [tex](x+9)^{2} +(y-46)^{2}= 123[/tex].
Answer:
center: (-9,46). Radius: 11.09
Step-by-step explanation:
this answer was given by monica789412. thank you monica789412!
also got it correct on khan academy