Question

What is the radius of a sphere, with center at the origin, that passes through the point (2.3.4)

Answer 1

(2,3,4)*

Answer 2

you have 2 points,
1 is (0,0,0)
2 is (2,3,4)
find out the distance between them, that's is the radius, isn't it?

Answer 3

Do I use the distance formula? Because there is no Z in the distance formula...

Answer 4

don't you know about distance formula?

Answer 5

do you know what I mean?

Answer 6

Not really :/

Answer 7

should i just ignore the Z? and just use distance?

Answer 8

the distance between the center and a point in the sphere is not the radius of the sphere?

Answer 9

why you have to worry about Z? your center is origin, what make you think that you cannot use it as a normal point?

Answer 10

Oh okay then!

Answer 11

know how to get that radius?

Answer 12

Uh let me try first

Answer 13

ok

Answer 14

Okay! I got it! Thank you! :)

Answer 15

lol..... np