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17 December, 15:09

A rectangular street sign has an area of 40 square inches and a perimeter of 28 inches. What are the dimensions of the sign?

inches by inches

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Answers (2)
  1. 17 December, 15:26
    0
    Answer: 4 inches by 10 inches

    Step-by-step explanation:

    The area of a rectangle can be written as b*h, while perimeter is equal to (2b + 2h).

    A = b*h = 40

    P = 2b + 2h = 28

    P = 2b + 2h

    28 = 2b + 2h

    28 = 2 (b+h)

    14 = b + h

    What two numbers add to 14 and multiply to 40?

    4 * 10 = 40

    4 + 10 = 14
  2. 17 December, 15:35
    0
    10 and 4
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