geometry

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sam must paint his bedroom ceiling. the diagram below represents his bedroom ceiling and includes a circular light fixture with a diameter of 2 feet. a gallon of paint covers 16 square feet and costs $8.95. how much will sam have to spend on paint to cover the entire ceiling except for the light fixture? assume he cannot buy a fraction of a gallon of paint.

  • geometry -

    Don't you realize that we can't see the diagram and you haven't given the dimensions?

  • geometry -

    the length is 12 and the width is 9

  • geometry -

    12 by 9 = 108 square feet

    Area of light fixture:

    A = pi * r^2
    A = 3.14 * 1^2
    A = 3.14 sq. ft.

    108 - 3.14 = 104.86 sq. ft.

    104.86/16 = 6.55 gallons

    7 * 8.95 = ?

  • geometry -

    where do you get 7 from?

  • geometry -

    wait ... is the 7 from 6.55?

    so would the answer for 7 * 8.95 be
    $62.65 ???

  • geometry -

    Funny, the REA's testware has this same question, ceiling dimensions 12/9 which is
    108 - the light fixture diameter 2 = area 3.14=104.86 sq ft, agreed. divided by 16 sq ft per gallon = rounded 7 gallons
    their answer choices:
    $44.75 $50.20 $38.50 $42.99
    am i crazy or is it NONE of these !!!

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