Step-by-step explanation:
Radius is half of the diameter
Circumference is 2*pi*radius
Area is pi*radius^2
So r (radius)= 10.3
C (circumference)=64.72
and A (area)=333.29
feel free to ask more questions :)
It's kinda blurry. I'm sorry!!
Here is my answer. In this problem, you need to use the similarity of triangles. I hope this is helpful.