Answer:
is this on edulastic? if you have the option check answer put 12 and let me know if it was right please.

Explanation:
Area is pi×r^2 and you times it by the fraction of the circle you have as its not a full circle.
Diameter of the target is 2196 mm
Step-by-step explanation:
We are given Circumference of target = 6,895.4400000000 mm.
We need to find the diameter of target.
The formula used is:

Putting values:

We know that 
So, Finding Diameter:

So, Diameter of the target is 2196 mm
Keywords: Circumference
Learn more about Circumference at:
#learnwithBrainly