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No Pembahasan Pilihan Essay Skor
1. Diagonal sisi = r √2 20
Diagonal Ruang = r √3
a. Diagonal Sisi = AC,BD, AF, BE, BG, CF, AH, DE, CH,DG, EG, FH
Panjang nya = 8 √2 cm
b. Diagonal Ruang = AG, BH, CE, DF
Panjang nya = 8 √3 cm
2. Panjang diagonal ruang = 12 √3 20
= s √3 = 12 √3
S = 12 cm
Jadi, Panjang rusuk kubus ABCD.EFGH 12 cm
3. S = √ 20
3
= √216
3
= 6 cm
Karena diperbesar 3 kali maka 6 x 3 = 18 cm
V = s x s x s
V = 18 x 18 x 18
3
= 5832 cm
4. Panjang = 5 m, Lebar = 3 m, Tinggi = 2 m 20
Volume : p x l x t
: 5cm x 3cm x 2 cm = 30 m 3
5. V = 49.000 20
Panjang = 14 cm, Lebar = 14 cm
Tinggi ?
t = 49.000
196
t = 25 cm
Total Skor 100
Pedoman Penskoran
Penentuan Nilai : N = X 100
34 E-MODUL KUBUS DAN BALOK
x
