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32 = 2((2a + 5) + (2a - 1))
16 = (2a + 5) + (2a - 1)
16 = 2a + 5 + 2a - 1
16 - 5 + 1 = 2a + 2a
12 = 4a
3 = a
32 = 2 (4a +4)
32 = 8a + 8
32 - 8 = 8a
24 = 8a
a =
a = 3
Panjang = (2a +5) = 2 (3) + 5 = 6 + 5 = 11
Lebar = (2a -1) = 2 (3) -1 = 6 -1 = 5