Problem 636. Spherical radius given four points

Determine the radius of a sphere provided four non-coplanar points on the surface of the sphere.

 pts = [x1 y1 z1;
        x2 y2 z2;
        x3 y3 z3;
        x4 y4 z4]

Hint: See http://steve.hollasch.net/cgindex/geometry/sphere4pts.html

Example:

 pts = [1 0 0;
        0 1 0;
        0 0 1;
       -1 0 0]
 r=1
Solve

Solution Stats

27.52% Correct | 72.48% Incorrect
Last Solution submitted on Apr 21, 2025

Problem Comments

Solution Comments

Show comments

Problem Recent Solvers241

Suggested Problems

More from this Author308

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!