Answer :
Final answer:
To maintain the same area when the length of a rectangle is increased, you need to adjust the width. In this case, the width would have to be 40 units.
Explanation:
The area of a rectangle is calculated by multiplying its length and width. In this case, the initial area of the garden is 140 * 120 = 16,800 square units. When the length is increased to 420, we need to find the new width that would maintain the same area. Let's call the new width x. We can set up the equation as follows: 420 * x = 16,800. Solving for x, we divide both sides by 420 which gives us x = 40. Therefore, the width would have to be 40 units in order for the garden to have the same area.
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