Hello, user!

Your answers are almost right . . .

A rectangular area with a square at its center.

The long side of rectangle is 8 more than its short side.

The side of square is (1/10) of the short side of rectangle.

Find the area A (area without square).

Let = short side of rectange.

Then = long side of rectange.

. . Area of rectangle:

Then = side of the square.

. . Area of square:

Therefore: