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22 October, 11:30

Joan is painting her room. the wall is 12ft tall and 18ft long. There is a door that will not be painted which is 7ft tall and 3ft wide. What is the area of the wall that is painted (remember, the door is not getting paint).

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  1. 22 October, 15:14
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    First, we should find the total area of the wall, then subtract the area of the door since it's not getting painted.

    Area = length x width

    A = (12) x (18)

    A = 216 square feet

    Now for the area of the door:

    A = l x w

    A = (7) x (3)

    A = 21 square feet

    For the total area getting painted:

    (Area of the wall) - (Area of the door) = (Total painted area)

    216 - 21 = 195 square feet
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