1. Volume gabungan bangun Ruang pada gambar tersebut adalah…cm³

Jawaban:

1. 42 cm^3

2. 144 cm^2

Penjelasan dengan langkah-langkah:

1. V kubus = s × s × s

= 3 × 3 × 3

= 27 cm^3

V limas = 1/3 × ( L alas ) × tinggi

= 1/3 × ( 3 × 3 ) × 5

= 1/3 × 9 × 5

= 15 cm^3

V1 + V2 = 27 + 15

= 42 cm^3

2. Lp kubus = 6 × s × s

= 6 × 3 × 3

= 54 cm^2

Lp limas = 4 × 1/2 × luas alas × tinggi

= 4 × 1/2 × 9 × 5

= 90 cm^2

Lp1 + Lp2 = 54 + 90

= 144 cm^2