What is 7 over 20 as a percentage
2 answers:
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Consider, 
. Let's say 
then the problem reduces to 
. (Do you understand this step?)
So then replacing a again with our definition we get,
.
So then replacing a again with our definition we get,
Answer:
The correct option is 1. The circumference of circle is 12π units.
Step-by-step explanation:
From the given figure it is clear that the radius of the circle is6 units.
The circumference of a circle is
Where, r is the radius of the circle.
The circumference of the circle is
The circumference of circle is 12π units.
Therefore option 1 is correct.