The perimeters of the square and the rectangle
below are the same. Write
and solve an equation to find
the value of x.

Step-by-step explanation:

Find the side length of the square. The formula is for area is

So take the square root to find the side length.

Now find the perimeter of the square.

setup the equation to solve for x. The left side is the perimeter of the rectangle and the right is the perimeter of the square.

Collect like terms

subtract 4 from both side

divide both side by 8

step-by-step explanation:

(s)he  is right it would be 5.5% because it is smaller than 15.5% or anything smaller than 15.5% in general