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area of the square is 81 square inches. length of one side is represented by X. what is the value of x?

Sagot :

The area of a square is given by:

[tex]A=l^2[/tex]

Where:

l = length of one of its sides:

Since the area is 81, and the length of one of its sides is x, then:

[tex]81=x^2[/tex]

Take the square root of both sides:

[tex]\begin{gathered} \sqrt[]{81}=\sqrt[]{x^2} \\ 9=x \\ x=9 \end{gathered}[/tex]

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