K ≥ 48
2(p+l) ≥ 48
p+l ≥ 24
2x-6+x ≥ 24
3x ≥ 30
x ≥ 10 cm
l ≥ 10 cm
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K ≥ 48
2(p+l) ≥ 48
p+l ≥ 24
2x-6+x ≥ 24
3x ≥ 30
x ≥ 10 cm
l ≥ 10 cm
2×(2x-6+x)>48
2×(3x-6)>48
6x-12>48
6x>48+12
x>60/6
x>10
l>10
jawaban c