Question

Find the length of the radius of the following circle.
(x + 2)2 + y2 = 10

Answer 1

The radius is the square root of 10 ... about 3.162 .

Answer 2

$(x+2)^2+y^2=10\\\\ general\ equation\ for\ circle\\ (x-a)^2+(y-b)^2=r^2\\\\ so\ r^2=10\ square\\ r=\sqrt{10}\ -radius\ of\ circle$