Answer:
• new garden area = 2x^2
• new side length = 8√2 ft
Explanation:
We are given that the area of a square of side x is ...
A = x^2
We want to double that area, so we can multiply by 2:
2A = 2x^2
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The original formula tells us that the side length x is the square root of the area:
√A = x . . . . . square root of original formula
Then the side length of the square with doubled area will be
new side length = √(new area) = √(2x^2) = x√2
For an original side length of 8 ft, the new side length will be ...
new side length = (8 ft)√2 = 8√2 ft.