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20 October, 08:52

A rectangle-shaped lot is 26.7 m long and 10 m wide. if fencing comes in 30 m rolls, how many rolls must be bought to fence the lot?

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  1. 20 October, 08:54
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    Given:

    l (length) = 26.7 meters

    w (width) = 10 meters

    f (fencing roll) = 30 meters

    Find:

    Fencing Roll Needed = P : f; where P is Perimeter

    To solve for P:

    P = 2 (l + w)

    Solution:

    We need to find P first.

    P = 2 (l + w); let's substitute the given sides

    P = 2 (26.7 meters + 10 meters)

    P = 2 (36.7 meters)

    P = 73.4 meters

    Now let us apply it to the formula

    Fencing Roll Needed = P : f

    Fencing Roll Needed = 73.4 meters : 30 meters; substituting the given numbers. The meter unit will be cancelled out

    Fencing Roll Needed = 2.4467

    Since you cannot buy that kind of amount in the market:

    Fencing Roll Neded ≈ 2.5 or 2 1/2; Final Answer
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