4.) * V balok = L alas × t

= (6 × 10) × 0,5 m

= 60 × 50 cm

= 3.000 cm³

* V segitiga = L alas × t

=(½× a× t)× t

= (½× 6 × (5m-0,5m))×10

=(½ × 6 × 4,5m) × 10

=(½ × 6 × 450 cm) × 10

=(½×2.700) ×10

= 1.350 × 10

= 13.500 cm³

# v bangun = v balok + v segitiga

= 3.000 + 13.500

= 16.500 cm³

5.)?kurang tawu

6.) * V balok besar = luas alas × t

= 12 × 3 × 4

= 36 × 4

= 144 cm³

* V balok kecil = luas alas × t

= (12 : 2 ) × 3 × ( 7 - 4)

= 6 × 3 × 3

= 54 cm³

* V segitiga = (½ × a × t) × t

= (½ × 6 × 3 ) × 3

=( ½ × 18 ) × 3

= 9 × 3

= 27 cm³

# V bangun = v b besar + v b kecil + v segitiga

= 144 + 54 + 27

= 225 cm³

kalo ada yang di tanya silahkan,maaf kalo slaah *_*