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6 votes
6 votes
The local park has a circular pond with a radius of 9 feet. What is the pond's circumference?

User Amirhe
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1 Answer

19 votes
19 votes

Answer:

Using 3.14 as pi, the answer would be 56.52, and using just pi (as in the input on a calculator) would be 56.54867.

Explanation:

The equation for circumference of a circle is C = πd, C representing the circumference and d representing the diameter. Since the equation shows the radius, the equation can also be C = 2πr, since the radius is half of the diameter. Multiply nine by two to get eighteen. 18 times 3.14 = 56.52.

User SteB
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