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50= 2(5x)
x=5
p = 3(5) = 15
l = 2(5) = 10
L = 15x10= 150cm^
2(3a+2a) = 50
2 (5a ) = 50
10a = 50
a = 50/10
a = 5
pajang = 3 x 5 = 15
lebar = 2 x 5 = 10
luas = p x l
= 15 x 10
= 150 cm²
jawabnya C