A circular playground has a circumference of 176 feet. What is the distance from the edge of the playground to the middle of the playground?

The distance from the edge of the playground to the middle of the playground is approximately:

Explanation:

To solve this exercise you must know PI (3.1416 approximately) which is the result from the circumference divided in the diameter, in the next form:

How we know the circumference and the valor of PI, we can find the playground diameter:

The distance from the edge of a circle to the middle is named radio, which is the half of the diameter, then:

How you can see, 28.01 feet is the distance from the edge of the playground to the middle of the playground.

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