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Kelas 8 MatematikaBab Bangun Ruang
31] Banyak rusuk segi n = 24
3n = 24
n = 24/3
n = 8
Prisma segi 8, maka bidang alasnya adalah segi 8
32] Tinggi limas
= √(40² - (1/2 . 48)²)
= √(1.600 - 576)
= √(1.024)
= 32 cm
Volume = 1/3 . s . s . t
Volume = 1/3 . 48 . 48. 32
Volume = 24.576 cm³