Weizishuanglan

There are no pictures, and I don't know how tall I am. What can people do?

According to my picture, if the height is 30? . Then the upper bottom plus the lower bottom is 70-30=40.

That area is 30*40/2=600 square meters.

G: 20 Upper sole plus lower sole =50? . Area =500 square meters

G: 40 upper bottom plus lower bottom =30. Area =600 square meters

G: 10？ Upper sole plus lower sole =60. Area =300 square meters

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