Radius = Circumference / 2π
r = 16π/2π
r = 8
In short, Your Answer would be 8
Hope this helps!
Answer:
3.7
Step-by-step explanation:
The cross product of two vectors gives a third vector

that is orthogonal to the first two.

Normalize this vector by dividing it by its norm:

To get another vector orthogonal to the first two, you can just change the sign and use

.