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    mathboy15's Avatar
    mathboy15 Posts: 15, Reputation: 1
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    #1

    Sep 7, 2008, 09:54 AM
    rectabgle area
    A rectangle has the dimensions x and x+5.
    It's area is 84cm^2. solve for x show working.
    I know that x is 7 but. I don't know how to show it tips please`?
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Sep 9, 2008, 04:29 AM
    Area of rectangle = Length x Breadth

    Just replace in the equation. Area = 84, length = x, breadth = x+5
    [OR A = 84, L = x+5, B = x].

    Plug in the values and solve. Post back if you still have difficulties.
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