Answer:
Radius is 5 units
Step-by-step explanation:
The radius of a circle will always be 1/2 of the diameter.
This gives the formula:

(substitute known values)

(divide 10 by 2)

Therefore the radius is five
I think maybe the second one I’m not fully sure but I hope this might help
Answer:
Loading,please wait...
Step-by-step explanation: