mohon bantuannya kakak" , terimakasih ya kak untuk yg membantu :3 , jawab yg teliti kakak, makasih :D​

1. Diketahui
r1 = 8 in
r2 = 4 in
r3 = 2 in
t1 = t2 = t3 = 4 in

Ditanya
Volume total
Vtotal = Vtabung 1 + Vtabung 2 + Vtabung 3

Vtabung 1 = phi x r^2 x t
= 3,14 x 8^2 x 4
= 803,84 in

Vtabung 2
= 3,14 x 4^2 x 4
= 200,96 in

Vtabung 3
= 3,14 x 2^2 x 4
= 50,24

Vtotal = 803,84 + 200,96 + 50,24
Vtotal = 1055,04 in


2. Diketahui
r tabung = 4 ft
t tabung = 8 ft
Vtabung = 3,14 x 4^2 x 8
Vtabung = 401,92 ft

Ditanya
Volume total

Vpersegi = p x l x t
Vpersegi = 14 x 8 x 2
Vpersegi = 1344

Vtotal = Vtabung + Vpersegi
Vtotal = 401,92 + 1344
Vtotal = 1745,93 ft


3. Diketahui
Alas segitiga = 6 ft
Tinggi segitiga = 4 ft
Tinggi prisma

Ditanya
Volume total

Vprisma = (1/2 x a x t) x t
Vprisma = (1/2 x 6 x 4) x 6
Vprisma = 72 ft

Vpersegi = p x l x t
Vpersegi = 12 x 6 x 4
Vpersegi = 288

Vtotal = Vprisma + Vpersegi
Vtotal = 72 + 288
Vtotal = 360 ft


Semoga membantu