Jawaban:
10. 1.500 cm³
11. 4.096 cm³
12. 24 dm
13. 12 cm
14. 104 cm
15. 156 cm
16. 1.000 cm³
17. 150 cm²
18. 14 cm
19. 96 cm
20. 120 cm
Penjelasan dengan langkah-langkah:
10. V balok
= p x l x t
= 20 x 15 x 5
= 300 x 5
= 1.500 cm³
11. V kubus
= R x R x R
= 16 x 16 x 16
= 256 x 16
= 4.096 cm³
12. Rusuk kubus
= ³√V
= ³√13.824
13 = 2 x 2 x 2 = 8 ( mendekati )
824 = 4 x 4 x 4 = 64
puluhan = 2
satuan = 4
= 24 dm
1 liter = 1 dm³
13. Rusuk kubus
= ²√La
= ²√144
= 1 | 44
1 = 1 x 1 = 1
44 = 2 x 2 = 4
puluhan = 1
satuan = 2
= 12 cm
14. Panjang rusuk balok
= 4 x ( p + l + t )
= 4 x ( 12 + 10 + 4 )
= 4 x 26
= 104 cm
15. Panjang rusuk kubus
= 12 x Rusuk
= 12 x 13
= 156 cm
16. V kubus
= R x R x R
R = Ka ÷ 4
= 40 ÷ 4
= 10 cm
= 10 x 10 x 10
= 100 x 10
= 1.000 cm³
17. Lp kubus
= 6 x S²
= 6 x 5 x 5
= 30 x 5
= 150 cm²
18. Rusuk kubus
Lp = 6 x S²
S² = Lp ÷ 6
= 1.176 ÷ 6
= 196
S = √196
= 14 cm
19. Panjang kawat
= 3 x Ka
= 3 x 32
= 96 cm
20. panjang rusuk kubus
R = ³√V
= ³√1.000
= 10 cm
Panjang seluruh rusuk
= 12 x 10
= 120 cm
Semoga dapat membantu
dan mohon maaf bila salah
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