The answer is C.
Hope that helps you.
To find the are of a square, we simply square the value of a side
so..

Area = 25 square units
Answer:
I did learn this before I'm not sure, but I think the answer is X x 10 = Y because on the chart for example X= 1 and Y= 10 so whatever number is on Y is basically X multiplied by 10. I hope this helps!