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= ( 4a - 2) + ( 4a + 10)
= 8a + 8
32 : 8 = 8a
4 = 8a
a =2
p = 9
l = 3
luas = 9.3 = 27
= ( 4a - 2) + ( 4a + 10)
= 8a + 8
32 : 8 = 8a
4= 8a
a= 8:4
a= 2
p = 9
l = 3
luas = 9.3 = 27