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A square garden plot measures 180 square feet. A second square garden plot
measures 405 square feet. How many more feet of fence will the second garden
plot require over that required for the first garden plot. But how did they get this???????

  • Math -

    Side of first garden plot:
    x^2 = 180
    x = √180 = 6√5
    perimeter is 24√5 or appr 53.67

    second garden plot:
    y^2 = 405
    y = √405
    perimeter = 4√405 or appr 80.50

    Extra fence needed = 4√405 - 24√5
    = appr 26.8 feet

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