Jawab:

2. Bangun ruang balok dan prisma trapesium siku-siku

5. Bangun ruang prisma segitiga siku-siku dan balok

Penjelasan dengan langkah-langkah:

2. Diketahui:

p = 20 cm

l = 15 cm

t = 13 cm

a = 26 cm

b = 16 cm

T = 15 cm

Jawab:

- V balok = p x l x t

V = 20 cm x 15 cm x 13 cm

V = 3900 cm³

- V prisma trapesium = 1/2 [((a+b) x t) x T ]

V = 1/2 [((26 cm + 16 cm) x 13 cm) x 15 cm]

V = 1/2 [(42cm x 13 cm) x 15 cm]

V = 1/2 [546 cm² x 15 cm]

V = [273 cm² x 15 cm]

V = 4095 cm³

Vgabungan= balok + prisma trapesium

V = 3900 cm³ + 4095 cm³

V = 7995 cm³

5. Diketahui:

a = 20 cm

t = 20 cm

T = 15 cm

p = 50 cm

l = 20 cm

Jawab:

- Volume prisma segitiga siku-siku:

V = 1/2 (a x t) x T

V = 1/2 (20 cm x 20 cm) 15 cm

V = 1/2 (400 cm²) 15 cm

V = 200 cm² x 15 cm

V = 3000 cm³

- Volume balok:

V = p x l x t

V = 50 cm x 20 cm x 20cm

V = 20000 cm³

- Volume gabungan = prisma segitiga + balok

Vg = 3000 cm³ + 20000 cm³

Vg = 23000 cm³

Maaf kalau salah....

Semoga membantu