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23 September, 20:15

the hedge boundary needs to be planted around a rectangular lawn 18 m long and 12 m wide. if 3 shrubs can be planted to grow a metre hedge, how many shrubs will be needed in all?

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  1. 23 September, 21:00
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    180

    Step-by-step explanation:

    let P represent the perimeter of the rectangle

    P = 2 * (12 + 18) = 2 * (30) = 60 m

    then

    the number of shrubs = 3 * (60) = 180
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