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7 March, 14:56

the area of a rectangle is 42.15 square meters. if the length is 21 meters, what is perimeters of the rectangle?

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Answers (2)
  1. 7 March, 17:33
    0
    perimeters of the rectangle=p=46.014 metres

    Step-by-step explanation:

    Given that:

    Length (l) = 21 m

    Area of rectangle (A) = 42.15 meter-square

    Width (w) = ?

    Required dа ta:

    Perimater of Rectangle=p=?

    Calculation:

    As we know that Area of rectangle=A=l*w

    Putting the value we get

    42.15 m (square) = (21 m) * w

    or w=42.15/21

    or w=2.007 m

    Now to find perimters of rectangle we know that

    p=2 (l + w) metres

    putting the values

    p=2 (21+2.007) metres

    p=2 (23.007) metres

    p=46.014 metres
  2. 7 March, 17:51
    0
    Answer:perimeter = 46.014 meters

    Step-by-step explanation:

    The formula for determining the area of a rectangle is expressed as

    Area = length * width

    The area of a rectangle is given as 42.15 square meters. The length of the rectangle is given as 21 meters. This means that the width of the rectangle would be

    Width = area/length = 42.15/21 = 2.007meters.

    The formula for determining the perimeter of a rectangle is expressed as

    Perimeter = 2 (length + width)

    Perimeter = 2 (21 + 2.007) = 23.007 * 2 = 46.014 meters
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