Question

Two spheres with the same radius , one centered at (1,2,-4) and the other centered at (2,4,3), touch each other tangentially at a single point. Find the value of the radius

Answer 1

use the distance formula between the two centers.

Then divide that distance by 2 to get the length of the radius.

Answer 2

holy molly its joe! :)

Answer 3

yo :)

Answer 4

do u know the formula by any chance?

Answer 5

is it \[1/2[(1,2,-4)+(2,4,3)]\]

Answer 6

is this right??