What is the maximum possible area of a parallelogram with one side of length 2 meters and a perimeter of 24 meters ?
A
40m2.
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B
22m2.
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C
25m2.
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D
20m2.
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Solution
The correct option is D20m2. If one side of the parallelogram is 2 meters long, then the opposite side must also be 2 meters long. You can solve for the unknown sides, which are equal in length, by writing an equation for the perimeter: 24 =2(2) + 2x, with x as the unknown side.
Solving, you get x=10 meters.
The parallelogram with these dimensions and maximum area is a rectangle with 2metres and 10metres sides.
Thus, the maximum possible area of the figure is: (2 m)(l0 m) =20m2.