No matter what size a circle is, it's always going to be 3.14. It's always going to be that because if you have a string that can wrap around the circle, it's going to always be turned out to be 3.14.
R = 1/2
Diameter = 1
Wrap the diameter around and you'll get 3.14.
Answer:
3.14 km
Explanation:
we know that area of a circle is πr², where r is the radius
if here radius is 1 kilometres, π is 3.14
then, circle's area = 3.14 * 1 * 1 = 3.14 km
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