Question

Find an equation of the sphere with center (4, 4, 1) and radius 4.

Answer 1

let center = (x1, y1, z1) = (4,4,1)
equation of a sphere:
(x-x1)^2 + (y-y1)^2 + (z-z1)^2 = r^2
(x-4)^2 + (y-4)^2 +(z-1)^2 = 16

Answer 2

okay thanks

Answer 3

thats what i got too...just wasnt sure if it was correct

Answer 4

no problem ; )