Job Recruitment Website - Property management - Find a math problem in grade five. (The process should be detailed, O(∩_∩)O Thanks in advance.
Find a math problem in grade five. (The process should be detailed, O(∩_∩)O Thanks in advance.
Adding 15m to the upper bottom becomes a parallelogram, which means that the lower bottom of the trapezoid is 35+ 15 = 50m.
When the area increases 135m, the height of the trapezoid is: 135*2 divided by 15 = 18m.
So the original trapezoidal area: (15+50)* 18 divided by 2=65* 18 divided by 2=585 square meters.
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