Respuesta :

do you have a picture? 

well if you have a square and a diagonal spiting the square into two triangles

that means that we can use 45 45 90 triangle and know that the sides will be 

each side = 15
 
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Answer with explanation:

Length of diagonal of Square =15√2 cm-------------(1)

Let side of Square = a cm

So, Length of Diagonal

By Using Pythagorean Theorem

      [tex]=\sqrt{a^2+a^2}\\\\=a\sqrt{2}[/tex]

                                              --------------------------------(2)

Equating (1) and (2)

[tex]a\sqrt{2}=15 \sqrt{2}\\\\ \text{Cancelling root 2 from both sides}\\\\a=15[/tex]

Side of Square= 15 cm

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