Answer :
The length of fencing should be 78.5 feet.
What is circumference of circle?
It is a well-known fact that the ratio of the circumference of a circle to its diameter is fixed and its value is 3.14159... which is symbolically represented as π. Therefore, circumference = π × diameter = 2π × radius.
Given:
diameter= 12.5 feet.
radius= 6.25 feet
So, circumference of circle
=2πr
=2.*314*6.25
= 78.5 feet.
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