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Cutiepo0

  • 4 years ago

a rectangular building that measures 100m by 80m is to be surrounded by a lawn of uniform width. The area of the lawn must equal the area of the building. Find the width of the lawn, to the nearest tenth of a metre

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  1. Cutiepo0
    • 4 years ago
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    I got up to \[w ^{2}+90w-2000\]

  2. guyc
    • 4 years ago
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    Looks good to me. well done!

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