Look at the rectangles in the diagram below.
Which has a larger area and by how much?
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Look at the rectangles in the diagram below.
Which has a larger area and by how much?
Let's calculate the area of each rectangle step by step:
Step 1: Calculate the area of Rectangle A.
- Dimensions are  and .
- The area is calculated as .
Expanding this expression using the distributive property, we get:
Step 2: Calculate the area of Rectangle B.
- Dimensions are  and .
- The area is calculated as .
Using the distributive property to expand:
Step 3: Compare the areas of Rectangle A and B.
- Area of Rectangle A: 
- Area of Rectangle B: 
Subtract the area of Rectangle B from the area of Rectangle A:
Thus, the area of Rectangle A is larger by area units.
The correct answer, therefore, is: The area of rectangle A is larger by 2 area units.
The area of rectangle A is larger by 2 area units.
\( (3+20)\times(12+4)= \)
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