tolong dijawab kak.....pake caranya nomor 13&14 ya.....

13.I : 22/7 × 14 × 20 = 880cm2
II : 28 × 28 × 20 = 804 cm2
Total : 880cm2 + 804cm2 = 1684cm2

14.I : 3,14 × 10/2 × 7 = 109,9cm2
II : 3,14 × 10 × 14 = 439,6cm2
Total : 109,9cm2 + 439,6cm2 = 549,5cm2

Menurut saya jawabannya seperti itu,maaf kalau salah

13. Volume tabung = phi x r² x t
V1 = 22/7 x 14² x 20
V1 = 12.320 cm³
Volume balok = p x l x t
V2 = 28 x 28 x 20
V2 = 15.680 cm³
Volume total = V1 + V2
Vt = 12.320 + 15.680
Vt = 28.000 cm³

14. Volume tabung 1 = phi x r² x t
V1 = 22/7 x 5² x 7
V1 = 550 cm³
Volume tabung 2 = phi x r² x t
V2 = 22/7 x 10² x 14
V2 = 4.400 cm³
Volume total = V1 + V2
Vt = 550 + 4.400
Vt = 4.950 cm³