duolingocom4
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  • 26-05-2017
  • Mathematics
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fussellk
fussellk fussellk
  • 26-05-2017
area of triangles:  1/2 x b x h
area of square:  l x w

Triangle
1/2 x 7 x 4= 14, but there are 3 of them so 42
Square:  7 x7 = 49

49 + 42 = 91
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