Question

tolong bantu in ya kak
pake caranya yaaa
17-18
makasih ​

Answer 1

Verified answer

Jawaban:

Nomor 17.

• Luas alas = 45 cm²
• Tinggi = 15 cm
• Volume = ...

Volume Limas

[tex] \sf Volume = \frac{1}{3} \times luas \: alas \times tinggi[/tex]

[tex] \sf Volume = \frac{1}{3} \times 45 \: {cm}^{2} \times 15 \: cm[/tex]

[tex] \sf Volume = \frac{1}{3} \times 675 \: {cm}^{3} [/tex]

[tex] \sf Volume = \frac{1}{ \cancel{3}} \times { \cancel{675}}^{ \: \: 225} \: {cm}^{3} [/tex]

[tex] \sf Volume = 225 \: {cm}^{3} [/tex]

.

Nomor 18.

• Jari - jari = 3,5 cm
• Tinggi = 45 cm
• Volume = ...

Volume tabung

[tex] \sf Volume = \pi \times {r}^{2} \times t[/tex]

[tex]\sf Volume = \frac{22}{7} \times {3,5}^{2} \times 45[/tex]

[tex]\sf Volume = \frac{22}{7} \times 12 ,25 \times 45[/tex]

[tex]\sf Volume = \frac{22}{7} \times 551,25[/tex]

[tex]\sf Volume = 22 \times 78,78[/tex]

[tex]\sf Volume = 1.732,5 \: {cm}^{3} [/tex]