That’s the answer your welcome
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 : )
The answer would be -40 because (-4)*(-2)=8. Then 8*(-5)=-40
Your answer is D . Hope I helped :) !