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tinggi alas =
=
=
=
= 10 cm
Luas alas = (alas × tinggi) ÷ 2
= (20 × 10) ÷ 2
= 200 ÷ 2
= 100 cm²
Luas permukaan prisma = (2 × Luas alas) + (t × 3s)
= (2 × 100) + (18 × 3 × 20)
= 200 + 1.080 cm²
Semoga bermanfaat.
Jangan lupa untuk kasih bintang & terima kasih :D
Salam,
Dissa Dhatu