math

Each year a growing tree adds a new ring to its section some years the ring is thicker than others why do you suppose this happens? Suppose the average thickness of growth rings in the Flintstones national forest is 0.5cm about how old is old Fred a famous tree in the forest if its circumference measures 766cm?

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  1. Circumference = 2πr

    Since each ring averages .5cm, solve for r and then divide by 2. Or you can just eliminate the 2 in the above equation.

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