luas bangun sesuai gambar ada
a. 252 cm²
b. 315 cm²
c. 450 cm²
d. 810 cm²
tolong dijawab pake cara
a. 252 cm²
b. 315 cm²
c. 450 cm²
d. 810 cm²
tolong dijawab pake cara
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Jawaban:
a. 252 cm²
Penjelasan dengan langkah-langkah:
luas bangun trapesium:
1/2 × tinggi × (alas atas + alas bawah)
= 1/2 × 12 × (12 + (9 + 12 + 9))
= 1/2 × 12 × (12 + 30)
= 1/2 × 12 × 42
= 6 x 42
= 252 cm²
Jadi, luas bangun = 252 cm² (a)