Four spheres of radius 10 sit on a flat table Each sphere

Last updated: 2/25/2023

Four spheres of radius 10 sit on a flat table Each sphere touches two of the other spheres and the centres of the four spheres form a square A fifth sphere of radius r is sitting on the table it touches the table at a point directly beneath the centre of the square formed by the four other spheres If the sphere of radius r touches each of the four other spheres determine the value of r