Vis inversely proportional to r^2 when r=2, v=12. the value of r is approximately 2.83 when v= 4 8 6 2

The correct answer option is 6.

Step-by-step explanation:

We know that is inversely proportional to so we can write it as:

∝

To change the proportionality to equality, we need to have a constant k.

When then   so we can find the value of the constant :

Now that we know the value of , we can find the value of   when  :

≈

the answer is a if my teacher taught me correct