Distribute 1/2 to <span>(n – 4):
</span>


<span>
Subtract (2n + 3):
</span>

<span>
Your equation should now look like this:
</span>

<span>
Combine like terms on both sides:
</span>



<span>
Subtract 1/2n from both sides:
</span>

<span>
Divide both sides by -5/2 to get n by itself:
</span>

<span>
The value of n is
2.</span>
Answer:
6.47
Since it's just asking for the other side of the diameter, it's equivalent to the radius given already.