设AE=x, 所求高为y,三角形ABE面积=1/2*10x+1/2*40*10+1/2sqrt(1600+x^2)=1/2*40x, 可得x=30
另外,三角形面积AME+ADM+MEC+ABE=正方形面积,代入后可得y=20
设AE=x, 所求高为y,三角形ABE面积=1/2*10x+1/2*40*10+1/2sqrt(1600+x^2)=1/2*40x, 可得x=30
另外,三角形面积AME+ADM+MEC+ABE=正方形面积,代入后可得y=20
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