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Bethany · Answer 1 · 2018-03-07T17:49:03+0000

you divide this figure into three parts, two rectangle, and a triangle.
The bottom part is 200cm² (10*20)
the middle part is 70cm² (7*10)
the triangle at top is 15cm² (3*10*1/2)
and add them up
200 +70+15=285cm²

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