Hello!
To find the side length you use the equation
![a = \sqrt{2} \frac{d}{2}](https://tex.z-dn.net/?f=a%20%3D%20%20%5Csqrt%7B2%7D%20%20%5Cfrac%7Bd%7D%7B2%7D%20)
a is side length
d is diagonal
Put in the number we know
![a = \sqrt{2} * \frac{27}{2}](https://tex.z-dn.net/?f=a%20%3D%20%20%5Csqrt%7B2%7D%20%2A%20%20%5Cfrac%7B27%7D%7B2%7D%20)
Divide
![a = \sqrt{2} * 13.5](https://tex.z-dn.net/?f=a%20%3D%20%20%5Csqrt%7B2%7D%20%2A%2013.5)
Multiply
a = 19.091
The answer is 19.09
Hope this helps!
Step by Step answer
Yes I believe that is correct
The y intercept is 1 because that is where the line touches the coordinate plane along the y axis