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luas persegi panjang 1 = p × l
=3cm×7cm= 21cm²
luas persegi panjang 2= p × l
= 3cm×4cm= 12cm²
luas persegi = 2cm×2cm= 4cm²
Luas gab= L persegi pnjng1 + L persegi pnjng2
+ L persegi
= 21cm² + 12cm² + 4cm² = 37 cm²