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130=2(9:4)
130:2=9:4
65=9:4
65=45:20
L pp = p.l = 45.20 =900
lebar = 4
dik = keliling perbandingan = 2 x ( 9 + 4 ) = 26
sol = keliling persegi panjang = 130 m
panjang = dit/dik x sol = 9/26 x 130 = 45 m
lebar =dit/dik x sol = 4/26 x 130 = 20 m
luas = p x l
= 45 x 20
= 900 m²