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  3. The perimeter of a rectangular plot of land is 110 meters. If the length of one side of the plot is 35 meters, what is the area

The perimeter of a rectangular plot of land is 110 meters. If the length of one side of the plot is 35 meters, what is the area

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问题 The perimeter of a rectangular plot of land is 110 meters. If the length of one side of the plot is 35 meters, what is the area of the plot, in square meters? ______m2
选项
答案700
解析 The correct answer is 700. To solve this problem, first calculate the width of the plot:
P = 2w+2l
110 = 2w+2(35)
110-70 = 2w
40 = 2w
20 = w
The area is 1×w= 35×20 = 700.
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