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10PTS PLEASE HELP!!!!!!!

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

400

20

10

100

User Gary Ong
by
8.5k points

1 Answer

5 votes

The equation of a circle:


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

(h, k) - a coordinates of the center

r - a radius

A diameter d = 2r

We have


x^2+(y-2)^2=100\to r^2=100\to r=√(100)\to r=10

Answer: d = 2 · 10 = 20

User Felixthehat
by
8.2k points