Questions: In the figure shown, the center square is removed.
a. Divide the remaining figure into two rectangles. What are the dimensions of each rectangle?
b. What is the area of each rectangle?
c. What is the total area of the remaining figure? How does this figure represent the difference of two squares?
a. Determine the dimensions of each rectangle. Select all that apply
A. (x-y) by (x-y)
B. y by (x-y)
C. x by y
D. x by (x-y)
Transcript text: In the figure shown, the center square is removed.
a. Divide the remaining figure into two rectangles. What are the dimensions of each rectangle?
b. What is the area of each rectangle?
c. What is the total area of the remaining figure? How does this figure represent the difference of two squares?
a. Determine the dimensions of each rectangle. Select all that apply
A. $(x-y)$ by $(x-y)$
B. $y$ by $(x-y)$
C. $x$ by $y$
D. $x$ by $(x-y)$
Solution
Solution Steps
Step 1: Divide the remaining figure into two rectangles.
We can divide the L-shaped remaining figure into two rectangles by extending the line of the smaller square's top edge to meet the larger square's left-hand edge. This creates a rectangle with dimensions _x_ by (_x_ - _y_) and a smaller rectangle below it with dimensions _y_ by (_x_ - _y_).
Step 2: Dimensions of each rectangle.
Rectangle 1: _x_ by (_x - y_)
Rectangle 2: _y_ by (_x - y_)
Therefore, the correct options are B and D.
Step 3: Area of each rectangle and the total area.
Area of Rectangle 1: _x_(_x - y_) = _x_² - _xy_
Area of Rectangle 2: _y_(_x - y_) = _xy_ - _y_²
This represents the difference of two squares (the larger square’s area, _x_², minus the smaller square’s area, _y_²).
Final Answer
a. B and D
b. _x_(_x - y_) and _y_(_x - y_)
c. _x_² - _y_² . It represents the difference between the area of the larger square (_x_²) and the area of the smaller square (_y_²).