The length of a diagonal of a square is 72cm. find the length of the sides of the square​

The answer would be 36 or 50.91

Step-by-step explanation:

The way you would do this is that the diagonal of the square creates two right triangles. Both of the triangles created are 45, 45, 90 triangles.

In all cases of the 45,45,90 triangles the sides are 1/2  of the hypotenuse aka the diagonal.  

So to solve, you would just multiply the diagonal by 1/2  and you have your answer.

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square