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panjang AO adalah
panjang OE adalah
panjang AE = 6 + 15 = 21
panjang FD = 16
maka luas layang = 21×16×1/2 = 168
luas jajar genjang = alas+ tinggi = 15 × 6 = 90
jadi, luas total = 90 + 168 = 258
nomor 27
keliling = 2×(40 + 20 + 15 + 15) = 2× (40 +50) = 90×2 = 180
#cmiiw semoga membantu