Algebra

If the length of each side of a square is increased by 3 cm, the perimeter of the new
square is 40 more than twice the length of each side of the original square. Find the
dimensions of the original square.

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  1. Side of original square ---- x cm

    perimeter = 4x

    side of new square = x+3
    New perimeter = .....

    translate: "the perimeter of the new
    square is 40 more than twice the length of each side of the original square"
    ---> new perimeter you found above = 2x + 40

    solve for x

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  2. so what would I set this to?
    2x+40 equals what?

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  3. is the ultimate answer

    side=6.5
    perimeter=26?

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  4. I had assumed you found the new perimeter to be
    4(x+3)
    = 4x + 12

    so 4x + 12 = 2x+40
    I had formed that equation for you, no solve it.

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