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17 May, 14:05

A wall that is 12 feet wide and 10 feet high is to be painted. A blackboard that is 5 feet wide and 3 feet high is affixed to the wall and is the only portion of the wall that will not be painted. The area of the portion of the wall that will be painted is how many square feet?

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  1. 17 May, 14:24
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    The area of the portion of the wall that will be painted is 105 square feet

    Explanation:

    Total area of wall = 12 * 10 = 120 ft²

    The area of the wall that will not be painted = area of the blackboard = 5 * 3 = 15 ft²

    So, the area of the wall to be painted = Total area of wall - Area of the wall that will not be painted = 120 - 15 = 105 ft²
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