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A square patio was enlarged by adding 9 feet to the length and width of the original square patio. If the area of the enlarged patio is 441 ft.2, what was the side length of the original patio?

Respuesta :

calculista

Answer:

The side length of the original patio was [tex]12\ ft[/tex]

Step-by-step explanation:

Let

x----> the side length of the original square patio

we know that

[tex]441=(x+9)^{2}\\ \\x^{2} +18x+81=441\\ \\ x^{2} +18x- 360=0[/tex]

Solve the quadratic equation by graphing

The solution is [tex]x=12\ ft[/tex]

see the attached figure

Ver imagen calculista

Answer:

for study island it is 11 feet

Step-by-step explanation:

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