Answer:
/75
Step-by-step explanation:
As I couldn't take the radical symbol I used this - "/".
5 /3
If 5 has to come in the radical sign it has to be squared
So, /25 × /3
/25×3
/75
Well, "minus 6 x cubed minus y squared minus 3 x y" translates to:

Then, if we insert the values for x and y, we get:

When we distribute and multiply:

And once we combine like terms:
104<em> is the answer</em>
We can see that the diameter is 5 cm. Radius is simply half of the diameter.
5/2=2.5
The radius is 2.5 cm.
Answer:
angle KJG = angle FGJ (by alternateinteriorangle)