Tetrahedron!
Geometry
Level
4
The base of a tetrahedron is an equilateral triangle of side 1. The fourth vertex is at a distance 1 above the centre of the base. What is the radius of the sphere which passes through all four vertices of the tetrahedron?
Give your answer to 2 decimal places.
The answer is 0.67.
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
