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p-l = 14 cm
p = 14 + l
k = 2(p+l)
100 = 2 (14 + 2l)
50 = 14 + 2l
2l = 36
l = 18
p = 32
Luas = p.l
= 32 . 18
= 576 cm2
2 ( 2l + 14) = 100
4l + 28 = 100
4l = 100-28
4l = 72
l = 72/4
l = 18
panjang = l + 14
= 18+14
= 32
lebar =18
luas = p x l
= 32 x 18
= 576 cm²