Jawab:
Penjelasan dengan langkah-langkah:
bangun ruang tabung
soal 1 a
r= 7cm, t= 6cm
V = π r² t
V = 22/7 x 7 x 7 x 6
V = 924 cm³
soal1b
d= 4 m
t= 10 m
V = 1/4 π d² t
V = 1/4 x 3,14 x 4² x 10
V = 125,6 m³
soal2 a
r= 5 cm
L = 120 π cm²
L = 2π r ( r + t)
120 π = 2 π 5 (5+t)
120 π = 10 π (5+t)
5 + t= 12
t = 7 cm
soal2b
V = 294 π
t= 6 cm
294 π = π r² . 6
r² = 294/6 = 49
r= 7
soal3
d= 84 cm = 8,4 dm, r = 1/2 d = 4,2 dm
t = 1,5 m = 15 dm
kecepatan air = D = 10 liter/menit
v tabung = π r² t
V tabung = 22/7 x 4,2 x 4,2 x 15 liter
V tabung = 831, 6 liter
t (waktu) = volume /debit
t = 831,6 / 10
t = 83,16 menit
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Jawab:
Penjelasan dengan langkah-langkah:
bangun ruang tabung
soal 1 a
r= 7cm, t= 6cm
V = π r² t
V = 22/7 x 7 x 7 x 6
V = 924 cm³
soal1b
d= 4 m
t= 10 m
V = 1/4 π d² t
V = 1/4 x 3,14 x 4² x 10
V = 125,6 m³
soal2 a
r= 5 cm
L = 120 π cm²
L = 2π r ( r + t)
120 π = 2 π 5 (5+t)
120 π = 10 π (5+t)
5 + t= 12
t = 7 cm
soal2b
V = 294 π
t= 6 cm
V = π r² t
294 π = π r² . 6
r² = 294/6 = 49
r= 7
soal3
d= 84 cm = 8,4 dm, r = 1/2 d = 4,2 dm
t = 1,5 m = 15 dm
kecepatan air = D = 10 liter/menit
v tabung = π r² t
V tabung = 22/7 x 4,2 x 4,2 x 15 liter
V tabung = 831, 6 liter
t (waktu) = volume /debit
t = 831,6 / 10
t = 83,16 menit