..
[tex]\boxed{ \begin{array}{lr} \boxed{\large{\sf{ LP \: = 2 \times \pi\times r \times (r + t) } }}\\ \boxed{\large{\sf{LP_t = \pi \times r \times (r + 2t) \: \: \: \: \: }}} \\ \boxed{\large{\sf{~V ~ \: = \pi \times r² \times t~~~~~~~~~~ ~~~ \: \: } }}\\ \\ \sf{Keterangan \ \: :}\\ \begin{aligned} \sf{ LP} &= \sf{ Luas~Permukaan }\\ \sf{ LP_{t}} &= \sf{ LP ~Tanpa~Tutup} \\ \sf{V} &= \sf{ Volume~Tabung}\\ \sf{ \pi } &= \sf{Konstanta~Lingkaran }\\\sf{ r} &= \sf{ Jari-Jari~Tabung}\\ \sf{ t} & =\sf{ Tinggi~Tabung }\end{aligned} \end{array}}~~\begin{aligned}& \to~r=½d \\ &\to~π=\frac{22}{7}~Jika~r/d/t = Kelipatan~7 \\ &\to~\pi =3.14~Jika~r/d/t \ne Kelipatan~7 \end{aligned}[/tex]
[tex]\begin{aligned} air~yang~diperlukan &= 1/2 \times \pi \times r^2 \times t \\&= 1/2 \times 3.14 \times (50~cm)^2 \times 2~m \\&= 1.57 \times (5~dm)^2 \times 20~dm \\&= 1.57 \times 25~dm^2 \times 20~dm \\&= 39.25~dm^2 \times 20~dm \\&= 785~dm^3 \\&= \boxed{\bold{\underline{785~ \ell}}} \end{aligned}[/tex]
[tex]\boxed{\colorbox{ccddff}{Answered by Danial Alf'at | 01 - 08 - 2023}}[/tex]
Jawaban:
Jadi volume tabung tersebut adalah 785 liter
Penjelasan dengan langkah-langkah:
Diketahui
Tabung
d = 100 cm = 10 dm
r = d : 2
r = 10 : 2
r = 5 dm
t = 2 m = 20 dm
Ditanya ½ V = ......liter
Jawab
1 liter = 1 dm³
V = π x r x r x t
½ V = ½ x π x r x r x t
= 0,5 x 3,14 x 5 x 5 x 20
= 1,57 x 25 x 20
= 1,57 x 500
= 785 dm³
= 785 liter
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Bangun Ruang Sisi Lengkung
[Tabung]
..
[tex]\boxed{ \begin{array}{lr} \boxed{\large{\sf{ LP \: = 2 \times \pi\times r \times (r + t) } }}\\ \boxed{\large{\sf{LP_t = \pi \times r \times (r + 2t) \: \: \: \: \: }}} \\ \boxed{\large{\sf{~V ~ \: = \pi \times r² \times t~~~~~~~~~~ ~~~ \: \: } }}\\ \\ \sf{Keterangan \ \: :}\\ \begin{aligned} \sf{ LP} &= \sf{ Luas~Permukaan }\\ \sf{ LP_{t}} &= \sf{ LP ~Tanpa~Tutup} \\ \sf{V} &= \sf{ Volume~Tabung}\\ \sf{ \pi } &= \sf{Konstanta~Lingkaran }\\\sf{ r} &= \sf{ Jari-Jari~Tabung}\\ \sf{ t} & =\sf{ Tinggi~Tabung }\end{aligned} \end{array}}~~\begin{aligned}& \to~r=½d \\ &\to~π=\frac{22}{7}~Jika~r/d/t = Kelipatan~7 \\ &\to~\pi =3.14~Jika~r/d/t \ne Kelipatan~7 \end{aligned}[/tex]
Penyelesaian Soal
[tex]\begin{aligned} air~yang~diperlukan &= 1/2 \times \pi \times r^2 \times t \\&= 1/2 \times 3.14 \times (50~cm)^2 \times 2~m \\&= 1.57 \times (5~dm)^2 \times 20~dm \\&= 1.57 \times 25~dm^2 \times 20~dm \\&= 39.25~dm^2 \times 20~dm \\&= 785~dm^3 \\&= \boxed{\bold{\underline{785~ \ell}}} \end{aligned}[/tex]
[tex]\boxed{\colorbox{ccddff}{Answered by Danial Alf'at | 01 - 08 - 2023}}[/tex]
Jawaban:
Jadi volume tabung tersebut adalah 785 liter
Penjelasan dengan langkah-langkah:
Diketahui
Tabung
d = 100 cm = 10 dm
r = d : 2
r = 10 : 2
r = 5 dm
t = 2 m = 20 dm
Ditanya ½ V = ......liter
Jawab
1 liter = 1 dm³
V = π x r x r x t
½ V = ½ x π x r x r x t
= 0,5 x 3,14 x 5 x 5 x 20
= 1,57 x 25 x 20
= 1,57 x 500
= 785 dm³
= 785 liter
Jadi volume tabung tersebut adalah 785 liter