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8 December, 12:51

The rectangle shown has a perimeter of 54 cm and the given area. It's length is 3 more than 5 times it's width. Write and some a system of equations to find the dimensions of the rectangle

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  1. 8 December, 14:08
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    Length = 23 cm

    Width = 4 cm

    Step-by-step explanation:

    The area isn't given.

    We will simply use the perimeter and length width information to find the dimensions of the rectangle.

    Let length be x and width be y

    Length is 3 more than 5 times width, so we can wriet:

    x = 5y + 3

    Also, the perimeter is the sum of all sides, so rectangle has 2 lengths and 2 widths, so perimeter is

    P = 2x + 2y

    and P = 54, so

    54 = 2x + 2y

    We know x = 5y + 3, so we substitute and find y:

    54 = 2x + 2y

    54 = 2 (5y + 3) + 2y

    54 = 10y + 6 + 2y

    48 = 12y

    y = 48/12

    y = 4

    So, length (x) would be:

    x = 5y + 3

    x = 5 (4) + 3

    x = 23

    So, the dimensions of the rectangle is:

    Length = 23 cm

    Width = 4 cm
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