Answer:
Each side is 4.5 cm
Step-by-step explanation:

To find the perimeter of a square you add all the sides.
But to find the side length you do the opposite. Which is the equation above.
Hope this helps : )
Answer:
Since A= 56 then B=56 so A+B=112
The whole tringle must be 180 degrees
So 180-112=68
SO C=68
I believe
Hi there ! i think is number one. or a
A tangent forms a right angle with the centre of circle at the point it touches the circumference. i.e. OAB = 90 degrees
If AOB = 55 degrees, then ABO = 90 - 55 = 35 degrees