2007-05-28 08:35:31 · 10 answers · asked by potomacbarrels 2 in Science & Mathematics ➔ Mathematics
The maximal distance between two points on the cube is the length of the diagonal which is the diameter for this set of points. The radius is then s(sqrt3)/2 where s is the side of the cube.
2007-05-28 09:28:09 · answer #1 · answered by knashha 5 · 0⤊ 0⤋
It should be the same as half the length of a side, since what you will really be finding is the radius of the inscribed sphere, which will not fill the cube completely, but only be tangent to each side. (The entire side would be the diameter of this sphere).
If you mean half of the long diagonal of a cube, (or the radius of the sphere that it could be inscribe into) this is slightly less than .86 times the length of a side (The whole diagonal -- or the diameter of this sphere -- is â3 * side or 1.717 * side).
Normally, you only consider sides of a cube. Radii are usually reserved for curved figures.
2007-05-28 16:40:51 · answer #2 · answered by Don E Knows 6 · 0⤊ 0⤋
Draw a circle within the cube and then find the radius of the circle.
2007-05-28 15:43:30 · answer #3 · answered by Melanie P 3 · 0⤊ 0⤋
I'm not a mathematician, but I guess a cube would have 2 radii. One would start from the center of the cube and end at its side. The second would begin at the center of the cube and end at any corner.
2007-05-28 15:40:56 · answer #4 · answered by Anonymous · 1⤊ 1⤋
r=a/2.
2007-05-28 15:39:12 · answer #5 · answered by Chelsey 5 · 0⤊ 0⤋
Cubes dont have radii. Do you drive on square tires?
2007-05-28 15:39:10 · answer #6 · answered by cattbarf 7 · 3⤊ 1⤋
there is no such thing. radii only apply to circular objects
2007-05-28 15:45:16 · answer #7 · answered by Anonymous · 0⤊ 1⤋
Doesn't exist.
2007-05-28 15:39:36 · answer #8 · answered by nitro 2 · 0⤊ 0⤋
3.14*X/12
2007-05-28 15:39:01 · answer #9 · answered by wigginsray 7 · 0⤊ 0⤋
no such thing.
2007-05-28 15:42:52 · answer #10 · answered by nikki true 3 · 0⤊ 0⤋