Diketahui Lp Kubus = 726 cm kuadrat Tentukan : A) Volume B) JumlahPanjangRusuk (JPR)

KUBUS

Lp = 726
6s^2 = 726
s^2 = 726/6
s^2 = 121
s^2 = 11^2
s = 11 cm

A. Volume = s^3 = 11^3 = 11×11×11 = 1331 cm^3
B. JpR = 12×s = 12×3 = 36 cm

A. Luas permukaan kubus = 6 x rusuk x rusuk
luas permukaan kubus = 6 x rusuk kuadrat 
726 /6 = rusuk kuadrat
akar 121 = rusuk
rusuk = 11 cm
volume = rusuk x rusuk x rusuk 
volume = 11 x 11 x 11
volume = 1,331 cm3
B. Jumlah panjang rusuk (keliling)
= 12 x rusuk
= 12 x 11
= 132 cm