Hey There!
Answer:
I didn't quite get the question because there is no circle image but...
If 7.5 is the area of the circle, then:
Radius: 1.55
Diameter: 3.09
Step-by-step explanation:
You can use the following formulas to help you:
To find radius:
where r = radius and c = circumference
To find diameter:
where r=radius
Good Luck!