Jawaban:
Bangun Ruang
_________________________________
Pertanyaan :
Diketahui:
Suatu Tabung dengan :
Diameter = 28 cm
Tinggi = 25 cm
Ditanya:
Hitunglah Volume Tabung tersebut!
Cara Penyelesaian :
Ubah Diameter ke Jari -jari :
D = 28
r = 28 ÷ 2
r = 14
________________
[tex] \tt V.t = \pi \times r {}^{2} \times t [/tex]
[tex] \tt V.t = \frac{22}{7} \times 14 {}^{2} \times 25 [/tex]
[tex] \tt V.t = \frac{22}{7} \times 14 \times 14 \times 25 [/tex]
[tex] \tt V.t = \frac{22}{ \bcancel7} \times \bcancel{14} { \: }^{2} \times 14 \times 25 [/tex]
[tex] \tt V.t = 22 \times 2 \times 14 \times 25 [/tex]
[tex] \tt V.t = 44 \times 14 \times 25 [/tex]
[tex] \tt V.t = 616 \times 25 [/tex]
[tex] \tt V.t = \red{15.400} \: cm{}^{3} [/tex]
Kesimpulan :
Jadi Volume Tabung nya adalah D. [tex] \tt \red{15.400} \: cm{}^{3} [/tex]
[tex] \tt{ = \pi \times {r}^{2} \times t}[/tex]
[tex] \tt{v = \frac{22}{7} \times 14 \times 14 \times 25}[/tex]
[tex] \tt{v = \cancel \frac{22}{7} } \tt \times \: \cancel{14²} \times 14 \times 25[/tex]
[tex] \tt{ v = 22 \times 2 \times 14 \times 25}[/tex]
[tex] \tt{ v = 44 \times 14 \times 25}[/tex]
[tex] \tt{v = 616 \times 25}[/tex]
[tex] \tt \orange{v = 15.400 \: {cm}^{3} (d)}[/tex]
[answer.2.content]