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300=2(2l+l)
300=2(3l)
300=6l
l(lebar)= 50
p(panjang)= 2*l = 2*50= 100
p=2l
k=2(p+l)
300=2(2l+l)
300=2(3l)
300=6l
l=50 lebarnya samadengan 50 meter
p=2l
p=2(50)
p=100 jadi panjangnya 100 meter :D