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perimeter is a+b+c+d
40+30+x+x=110
x=20
area =1/2(a+b)x
1/2(40+30)20
area=700squnits
40+30+x+x=110
x=20
area =1/2(a+b)x
1/2(40+30)20
area=700squnits
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