The answer is a and if not D
The correct expression is A.
Answer:
10
or 14.14 appromiximately
Step-by-step explanation:
Area of square = 100
So length on side = 10 because all sides of square equal.
Length of Diagonal = Side x 
So the length of diagonal is 14.14 approximately
Hi, to find the area of the rectangle all you have to do is multiply the length times the width.
A = 80inches • 45inches = 3600