Perimeter of Original Rectangle

Discussion in 'Geometry and Trigonometry' started by nycmathguy, Sep 15, 2021.

  1. nycmathguy

    nycmathguy

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    A rectangle is cut in half to create two squares that each has an area of 25. What is the perimeter of the original rectangle?

    Let me see.

    Square A

    Let s = side of square

    Area = s^2

    25 = s^2

    sqrt{25} = sqrt{s^2}

    5 = s

    The original rectangle is cut in half. This tells me that Square B also has a side that is 5.

    Perimeter = 2(5 + 5) + 2(5)

    P = 2(10) + 10

    P = 20 + 10

    P = 30

    You say?
     
    nycmathguy, Sep 15, 2021
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  2. nycmathguy

    MathLover1

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    perfect
     
    MathLover1, Sep 15, 2021
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  3. nycmathguy

    nycmathguy

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    Thanks. I don't think it's terribly difficult. Can you check my thread here entitled Find Area of Blue Shaded Region?
     
    nycmathguy, Sep 16, 2021
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