7-8 dong kak tpi sekalian caranya ya makasiii

7. 3,14×30×30×70=197,82
8. 1/3×6×6×6+6×6×8 =360

07.
D = 60 Cm
R = 30 Cm
T = 70 Cm

Volume Tabung
= π x r2 x T
= 3.14 x (30)^2 x 70
= 197,82 ......................... ( a )



08.
Volume Balok
= P x L x T
= 6 x 6 x 8
= 288 Cm3

Volume Limas
= 1/3 x LA x T
= 1/3 x P x L x T
= 1/3 x 6 x 6 x 6
= 72 Cm3

Volume Total
= 288+ 72
= 360 Cm3 .............. ( d )


Maaf kalau benar ya kak, soalnya dikelas memang saya gak terlalu cerdas.