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A circular coffee table has a diameter of 5 ft. What will it cost to have the top refinished if the company charges $3 per square foot for the refinishing?

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    First, find the circumference of the circle with diameter 5 feet.

    We use this formula:

    C = pi x d, where pi = 3.14 and d = 5 feet

    C = 3.14 x 5 feet

    C = 15.7 feet

    Now multiply 15.7 feet by $3 and you will find how much it will cost to have the top refinished.

    Can you finish?

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