atap sebuah limas alasnya berbentuk persegi panjang berukuran 1.6 m x 1,2 m dan panjang rusuk tegaknya 2,6 m.berapa m³ udara yang berada dalam ruangan tersebut?

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2 September 2025 matematika 5 menit baca
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Grade: Education Mata Pelajaran: matematika
atap sebuah limas alasnya berbentuk persegi panjang berukuran 1.6 m x 1,2 m dan panjang rusuk tegaknya 2,6 m.berapa m³ udara yang berada dalam ruangan tersebut?
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161 Dilihat 161 Jawaban

Jawaban (161)

Jawaban Terbaik
(486)
Bab Bangun Ruang
Matematika SMP Kelas VIII

limas alas persegi panjang

diagonal alas = √(p² + l²)
diagonal alas = √(1,6² + 1,2²)
diagonal alas = √(2,56 + 1,44)
diagonal alas = 2 m

tinggi limas = √(rusuk tegak² - (1/2 x diagonal alas)²)
tinggi limas = √(2,6² - (1/2 x 2)²)
tinggi limas = √(6,76 - 1)
tinggi limas = 2,4 m

Volume = 1/3 x p x l x t
Volume = 1/3 x 1,6 x 1,2 x 2,4
Volume = 1,536 m kubik
Dijawab pada tanggal 2 September 2025

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