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Jawaban:
288 cm²
Penjelasan dengan langkah-langkah:
L persegi panjang = p x l
= 18 x 12
= 216cm²
L segitiga = ½ at
= ½ x 18 x 8
= 72cm²
L total = L persegi panjang + L segitiga
= 216 + 72
= 288 cm²
Jawaban:
288m²
Penjelasan dengan langkah-langkah:
luas persegi panjang :
L = p x l
= 18 x 12
= 216m²
luas segitiga :
L = 1/2 x a x t
= 1/2 x 18 x (20-12)
= 1/2 x 18 x 8
= 72m²
luas total :
Ltotal : L1 + L2
216 + 72
288m²