tolong di bantu.....
1. s = 19 cm
V kubus = s^3
= 19^3
= 6859 cm^3
2. kubus punya 12 rusuk
panjang 1 rusuk kubus = 24 dm : 12= 2dm = 20 cm
volume = 20 cm x 20 cm x 20 cm = 8000 cm^3 = 800 dm^3
3. V = r x r x r = 31 x 31 x 31 =29.791 dm^3 = 29.791 liter
4. rusuk kubus = ³√volume
rusuk kubus = ³√19.683
19.683 = 3^9
maka rusuk kubus = ³√3^9
rusuk kubus = 3³ = 27
5. V = S³
S³ = ³√ V
S = ³√ 97336
S = 46 cm
Maaf kalah salah
V kubus = s^3
= 19^3
= 6859 cm^3
2. kubus punya 12 rusuk
panjang 1 rusuk kubus = 24 dm : 12= 2dm = 20 cm
volume = 20 cm x 20 cm x 20 cm = 8000 cm^3 = 800 dm^3
3. V = r x r x r = 31 x 31 x 31 =29.791 dm^3 = 29.791 liter
4. rusuk kubus = ³√volume
rusuk kubus = ³√19.683
19.683 = 3^9
maka rusuk kubus = ³√3^9
rusuk kubus = 3³ = 27
5. V = S³
S³ = ³√ V
S = ³√ 97336
S = 46 cm
Maaf kalah salah