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March 24, 2017

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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?

$15.00?

  • math - ,

    Nope.

    You need to find the area of the circle.

    A = pi * r^2
    A = 3.14 * 2.5^2
    A = ?

    Multiply your answer by #3.

    What do you get?

  • math - ,

    $23.55?

    or would i take the 2.5^2 and multiply it getting 5 then multiply that by 3.14 which is 15.7 multiplied by 3 equals 47.10

  • math - ,

    A = pi * r^2
    A = 3.14 * 2.5^2
    A = ?


    2.5 squared = 6.25

    A = 3.14 * 6.25
    A = 19.625 square feet

    $3 * 19.625 = $58.875

    Since the company probably rounds up the square feet, your cost would probably be $60.00.

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