Diketahui kubus mempunyai panjang rusuk masing masing A 4cm, B 7cm. tentukan masing masing luas permukaan kubus, volume kubus, panjang diagonal ruang, dan salah satu luas bidang diagonal! tolong bantu cari cara kerjanya
IvanaA
A) S = 4cm LP = 6 S² = 6 x 4² = 6 x 16 = 96cm² Vol = S³ = 4³ = 64cm³ DR = S√3 = 4√3 BD = S²√2 =4²√2 = 16√2 -------------------- B) S = 7cm LP = 6S² = 6.7²= 294cm² Vol = S³ =7³= 343cm³ DR = S√3 = 7√3 BD = S²√2 = 7²√2 = 49√2
LP = 6 S²
= 6 x 4²
= 6 x 16
= 96cm²
Vol = S³
= 4³
= 64cm³
DR = S√3
= 4√3
BD = S²√2
=4²√2
= 16√2
--------------------
B) S = 7cm
LP = 6S² = 6.7²= 294cm²
Vol = S³ =7³= 343cm³
DR = S√3 = 7√3
BD = S²√2 = 7²√2 = 49√2