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L2 = 23 × 8 = 184
L1 + L2 = 28 + 184 = 212
maap klo slah :)
Luas Bangun = Luas I + Luas II
= 152 + 28
= 180 Cm²
Luas I ( Trapesium ) = × ( Jumlah Sisi Sejajar ) × T
= × ( 23 + ( 4 + 7 + 4 ) × 8
= × ( 23 + 15 ) × 8
= × 38 × 8
= 19 × 8
= 152 Cm²
Luas II ( Persegi Panjang ) = P × L
= 4 × 7
= 28 Cm²