Jawaban:

Nomer 1

• Volume balok

= p × l × t

= 18 × 9 × 12

= 1.924 cm³

• Volume kubus

= s × s × s

= 27 × 27 × 27

= 19.683 cm³

Nomer 2

Volume Limas segi empat

= ⅓ × luas alas × t Limas

= ⅓ × (p × l) × 15

= ⅓ × (27 × 10) × 15

= ⅓ × 270 × 15

= 270 × 5

= 1.350 cm³

Nomer 3

a. Volume

= volume kerucut

= (⅓ × luas alas × t)

= (⅓ × (π×r²) × 12))

= (⅓ × (22/7 × 7²))

= (⅓ × (22 × 7))

= (⅓ × 154)

= 51,33 cm³

b. Volume

= volume tabung

= luas alas × t

= ( πr² ) × 21

= ( 22/7 × 7² ) × 21

= ( 22×7 ) × 21

= 154 × 21

= 3.234 cm³