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19 October, 22:23

Faron wants to paint the four walls in his bedroom. The room measures 12 ft long, 10 ft wide and 8 ft high. There are two doors that each measure 3 ft by 7 ft and a window that measures 3 ft by 4 ft. If Faron does not paint the doors and window, what is the total area he will paint?

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  1. 19 October, 22:40
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    319 square feet.

    Step-by-step explanation:

    The walls of the room (the ones on the long side) have an area of 12 x 8 = 96 square feet each one. Thus, their area is 96 x 2 = 192 square feet.

    The other two walls have an area of 10 x 8 = 80 square feet each one. Thus, their area combined is 80 x 2 = 160 square feet.

    Therefore, we have that the total area of the four walls is

    192 + 160 = 352 square feet

    However, we have a door and a window that won't be painted.

    The area of the door is: 3 x 7 = 21 square feet

    The area of the window is 3 x 4 = 12 square feet

    Thus, the total amount of area that won't be painted is

    21 + 12 = 33 square feet.

    So we are going to take the total area minus the area that won't be painted to know the total area that Faron will pain:

    352 - 33 = 319 square feet.

    Thus, she will paint 319 square feet
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