What is the length of the side of a square whose diagonal is 15?

To determine the length of the side of a square when given its diagonal, we can use the relationship between the side length (
s) and the diagonal (d) of a square. This relationship is derived from the Pythagorean theorem:

Diagonal (d) = s × √2

Where:

  • d is the length of the diagonal,
  • s is the length of one side of the square.

In this case, the diagonal (d) is given as 15. We can rearrange the formula to solve for the side length (s):

s = d / √2

Now, substituting the value of d into the formula:

s = 15 / √2

To calculate this, we first need to find the value of √2, which is approximately 1.4142. Now, substituting this value into the equation:

s ≈ 15 / 1.4142

When we perform the division:

s ≈ 10.6066

Therefore, the length of each side of the square is approximately 10.61 (rounded to two decimal places).

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