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L persegi = s x s = 8 x 8 = 64 cm2
Lpersegipanjang = p x l
Lpersegi panjang = 64 cm2 (sm dg Lpersegi)
p x l = 64
p x 4 = 64
p = 64/4
p= 16 cm
= 8×8. } Luas persegi
= 64 cm
L= a × l
= ? × 4. }luas persegi panjang
= 64
a= L ÷ l
= 64 ÷ 4 } alas persegi panjang = 16
= 16