The area of a rectangular field is 99m2. The length of one side is 11m. The farmer needs to know its perimeter to work out how<

Question

The area of a rectangular field is 99m2. The length of one side is
11m. The farmer needs to know its perimeter to work out how
much fencing will be needed? Help

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Nguyệt Ánh 3 years 2021-08-24T21:31:46+00:00 2 Answers 8 views 0

Answers ( )

  1. giabao
    0
    2021-08-24T21:32:58+00:00
    Reply

    Answer:

    40 m

    Step-by-step explanation:

    Hi there!

    What we know:

    • The field is rectangular
    • A = 99 m²
    • Length of one side = 11 m

    1) Find the length of the other side

    Plug all the given information into the area formula for a rectangle:

    A=lw where A is the area, l is the length and w is the width

    99=11w

    Divide both sides by 11 to isolate w

    \frac{99}{11} = \frac{11w}{11} \\9=w

    Therefore, the width of the field is 9 m.

    2) Find the perimeter of the field

    P=2(l+w) where l is the length and w is the width

    Plug in the length (11 m) and the width (9 m)

    P=2(11+9)\\P=2(20)\\P=40

    Therefore, the perimeter of the field is 40 m.

    I hope this helps!

  2. Jezebel
    0
    2021-08-24T21:33:04+00:00
    Reply

    Answer:

    40 m

    Step-by-step explanation:

    The length of another side

    = 99÷11

    = 9 m

    The perimeter of the field

    = 9×2 + 11×2

    = 40 m

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