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10 x l = 60
10L = 60
L = 60/10
L = 6
keliling = 2 x (p + l)=
2 x (10 + 6) = 2 x 16= 32 cm²
semoga membantu
=<2 ✖ 60 >+<2 ✖ 10 >
=120 + 20 =140
kalo salah maaf yah