luckypaw021 luckypaw021
  • 12-04-2018
  • Mathematics
contestada

10PTS PLEASE HELP!!!!!!!

Find the diameter of a circle whose equation is x^2+(y−2)^2=100

400

20

10

100

Respuesta :

gmany
gmany gmany
  • 30-07-2018

The equation of a circle:

[tex](x-h)^2+(y-k)^2=r^2[/tex]

(h, k) - a coordinates of the center

r - a radius

A diameter d = 2r

We have

[tex]x^2+(y-2)^2=100\to r^2=100\to r=\sqrt{100}\to r=10[/tex]

Answer: d = 2 · 10 = 20

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