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2(3x + 2x) = 60
10x = 60
x = 6
p = 3 x 6 = 18 cm
l = 2 x 6 = 12 cm
luas = p x l
= 18 x 12 = 216 cm²
p = 3a
l = 2a
K = 60
K = 2(p + l)
60 = 2(3a + 2a)
30 = 3a + 2a
30 = 5a
6 = a
p = 3a
= 3(6)
= 18
l = 2a
= 2(6)
= 12
L = p × l
= 18 × 12
= 216
Jadi luasnya adalah 216.