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Bangun 1 : jajar genjang
bangun 2 : persegi panjang
luas 1 :
t = 39 - 22
= 17 cm
a = 25 cm
luas : a x t
: 25 cm x 17 cm = 425 cm²
luas 2 :
p = 25 cm
l = 22cm
luas : p x l
: 25 cm x 22 cm = 550 cm ²
Luas daerah segi banyak :
luas 1 + luas 2 = 425 cm² + 550 cm²
= 975 cm²