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Find the perimeter of a square with the diagonal of 2 inches.2√16 in08 inΟ 2 inO 4√2 in2 in

Find the perimeter of a square with the diagonal of 2 inches.2√16 in08 inΟ 2 inO 4√2 in-example-1
User Tartar
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1 Answer

5 votes

We need to find the perimeter of the square using the given diagonal:

If we look at the diagonal, it represents the hypotenuse of a right triangle.

Now, we can use the Pythagorean theorem to find the other sides.


h^2=a^2+b^2

Where h represents the hypotenuse.

a and b represent the other sides

If the square has all sides with the same measure, we can replace using the function:

Then, solve for x

(x represents a side of the triangle)


\begin{gathered} 2^2=x^2+x^2 \\ 4=2x^2 \\ (4)/(2)=x^2 \\ 2=x^2 \\ √(2)=x \end{gathered}

Finally, the perimeter of a triangle is given by the sum of all the sides. (a square has 4 sides)

Then,

Perimeter = √2+√2+√2+√2 = 4√2

Hence, the correct answer is the last option.

User Ryszard Czech
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