What is the equation of the circle with center (0,1) and a radius of 10? a. x^2 + (y-1)^2 = 100 b. (x-1)^2 + y^2 = 100 c. x^2 + (y+1)^2 =100

Question

asked Apr 8, 2019 145k views

1 Answer

Albattran · Answer 1 · 2019-04-14T21:50:00+0000

The equation of a circle:

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

(h, k) - a coordinates of the center

r - a radius

We have:

$(0,\ 1)\to h=0;\ k=1\\r=10$

substitute:

$(x-0)^2+(y-1)^2=10^2\\\\x^2+(y-1)^2=100$

Answer: a. x^2 + (y-1)^2 = 100