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pi is the ratio of circumference to the diameter of same circle. The length of the metal frame of trampoline considered is: Option D: 37. 7 feet.
<h3>How to find the length of the outer line of a circle?</h3>Length of the outer line of a circle is called its circumference.
If the circle has got radius of r units length, then
Circumference of that circle = 2π r units = πd units where d is diameter of that circle.
This is why, we get the ratio of circumference to diameter as:
It is given that the trampoline in consideration has got diameter of 12 feet.
It is said that π = 3.14 to be considered (its not its exact value though).
Therefore, we get
Hence, the length of the metal frame of trampoline considered is obtained as: Option D: 37. 7 feet.
Learn more about circumference of circle here: