# Sphere from tree points

Equation of sphere with three point (a,0,0), (0, a,0), (0,0, a) and center lies on plane x+y+z=a

Result

e =  0

#### Solution:

Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):

Math student
how can you write  r=a.(2/3)^1/2
is this applicable for all plane equation?

Dr Math
We found some bugs in this problem, but I think now is OK solution:

(x+a)^2 + (y+a)^2+(z-3a)^2 = 6 a^2

#### To solve this example are needed these knowledge from mathematics:

See also our right triangle calculator. Looking for help with calculating roots of a quadratic equation? Do you have a system of equations and looking for calculator system of linear equations? See also our trigonometric triangle calculator.

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