Answer:
Option D. 8 units
Step-by-step explanation:
step 1
Find the area of rectangle
The area of rectangle is
[tex]A=(4)(16)=64\ units^2[/tex]
step 2
Find the length side of the square with the same area of rectangle
The area of a square is
[tex]A=b^2[/tex]
where
b is the length side of the square
we have
[tex]A=64\ units^2[/tex]
substitute
[tex]64=b^2[/tex]
take the square root both sides
[tex]b=8\ units[/tex]
therefore
The length side of the square is 8 units
