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L= √360000=600
L= p x l
p= 600/20=30 (persegi panjang)
s=20
l=√360000
l=600
klo persegi itu tdk mngkin krna rmusnya=s²
jd jka 20²=400 tdk cocok
jka persegi pngjng rmusnya =p×l
20×l=600
l=600÷20
l=30
jdi p×l=luas
=20×30=600
bsa jg blh ketupt
krna rmusnya=d1×d2/2
=20×d2/2=600
d2=600×2/20
d2=60
jdi bsa sja blh ketupat atau persegi pnjng atau mngkin yng lainya