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Dik :

AB = 34 cm

AG = 28 CM

CG = CF = FH = 3 cm

GH = 8 cm

DE = 12 cm

BD = 2 cm

Dit:

L1 = p x l

p = AB

l = AC

AC = AG – AC

AC = 28 cm – 3 cm

AC = 25 cm

L1 = p x l

L1 = 34 cm x 25 cm

L1 = 850 cm²