Jawab :

1).16200 cm3

2).15.120 cm3

3).5.338 cm3

4).22.016 cm3

5).5390 cm3

6)18.620 cm3

Penjelasan dengan langkah-langkah :

1) volume kubus + balok

(18×18×18)+(32×18×18)

5832+10368

=16200 cm3

2)Volume balok = 35×16×18=10.080cm3

Volume limas = 1/3×luas alas ×tinggi

=1/3×(35×16)×(45-18)

=1/3×560×27

=5.040 cm3

Volume total = 10.080+5.040

=15.120 cm3

3) V=(v kerucut)+(v setengah bola)

V=(1/3 diagram r3 t)+(2/3 diagram r3)

V=(1/3 3,14 × 102×31)+(2/3×3,14×103)

V=3.244.67+2.093.33

V=5.338 cm3

4)V=bangun 1 +bangun 2 + bangun 3

=(p×l×t)+(53)+(p×l×t)

=(16×16×35)+(103)+(16×16×35)

=8.960+4096+8960

=22.016 cm3

5)V= tabung+v kerucut

=diagram r3×t + 1/3 diagram r2 t

=22/7 ×7×7×25 + 1/3×22/7×7×7×30

=3850+1540

=5390 cm3

6)V balok =20×38×17

=12:920 cm3

V Prisma=15×20/2 × 38

=150×38

=5700cm3

V total =12.920+5.700

=18.620cm3

Semoga bermanfaat >_<